Along the luminous seam of surf and sand, a heron reads the tide’s slow grammar, patience embodied, until water yields a silver secret and morning becomes ceremony.
We walk the long seam where the Atlantic writes its restless script, and our beachcombing becomes a study in attention. The shore’s edge—where foam loosens shells from sand and the wind arranges salt on the tongue—draws other walkers too: grey herons, patient and arrow-straight, patrolling the surf line as if reading a language older than tides. They halt us without trying. We stand, quieted, while they work the boundary between water and land, between hunger and satisfaction.
I pack an iPhone sometimes for beachcombing as a lightweight alternative to SLRs. This post features iPhone photographs.
Along this narrow world of sand and surf, herons keep two distinct manners. Some linger near anglers, learning the thrift of handouts and the craft of appearing inevitable. Others refuse that bargain and hunt on their own, staking the wash with a slowness that is not delay but method. These independent operators move along the ocean’s margin: high enough to let the breakers fold ahead of them, low enough that their long legs stir the small lives hidden in the cross-hatching currents. To follow one with the eye is to adopt a different clock. Sandpipers skitter and dash; the heron lengthens time.
A perfect place to stalk the surf
At first the bird seems merely spellbound by light on water. Then a shift: a narrow cant of the head, the smallest realignment of the eye to the glare. The neck—serpentine and stored with intention—uncoils quick as a strike, and the bill cleaves the surface. The world either yields or it doesn’t. Often it doesn’t. When it does, the beak lifts an impossibly large, glinting fish, as if the ocean had lent out a secret.
Success!!
What follows is ceremony. The heron stands and calibrates, turning the silver length with almost invisible nods until head and prize agree. A sharp jerk aligns the fish with beak and gullet; the upper throat swells, accepting the whole, unchewed. Two more pulses and the catch is a memory traveling inward. It is an astonishment every time, not because we do not understand what is happening but because we do, and still it exceeds us.
We carry a smart phone on these morning circuits, a slim stand-in for heavier glass, enough to witness without intruding. Backlit by the early sun, the herons are cut from bronze and shadow, working the luminous edge while the day composes itself behind them. In the afternoons we meet fewer of the solitary hunters when the strand belongs more to the opportunists near the thinning knots of anglers. Why the shift, we cannot say. The ocean has its schedule; so, it seems, do its readers.
If we keep our distance, we are permitted to watch. Cross a line we don’t perceive and the bird will rise all at once, the long body unfolding, the voice a rasping scold torn from the throat of reed beds and marsh dawns; but, grant it enough space, and the heron returns us to the lesson it keeps teaching: that patience is a kind of movement; that the boundary of things is where change is clearest; that the most astonishing acts require the courage to do very little, very well, for a long time.
We come to linger where the waves erase our tracks, apprenticed to that slow grammar, trying to learn the tide’s careful verbs before the light turns and the day becomes something else—a different text, the same shore, the heron already a thin signature against the horizon.
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Copyright 2025 All Rights Reserved Michael Stephen Wills
After 25 years of visiting Cocoa Beach, a discovery of coquina clams transformed my appreciation for the ecosystem, revealing its beauty, complexity, and intrinsic connections to life.
For nearly two and a half decades, I’ve strolled the sands of Cocoa Beach—since my first visit in March 2001—comforted by the rhythmic Atlantic waves and the familiar stretch of shoreline. I thought I knew this beach intimately; from the way the sunrise paints the water orange to the feel of wet sand under my feet. Yet it wasn’t until a clear morning in February 2025 that I recognized one of its tiniest treasures: the coquina clam. In the past, I might have walked past countless little shells and the tiny siphons and feet in the sand without a second glance. Now, with newfound awareness, I realize an entire world had been bustling at my toes all along.
February 2025: Discovering the Coquina Clams
Early one February morning, as the high tide receded, I noticed something magical happening at the water’s edge. Tiny coquina clams—each no larger than a fingernail—were emerging from the sand only to swiftly burrow down again between each wave.
These living coquina clams were found in the receeding high tide on a February 2025 morning on Cocoa Beach, Brevard County, Florida
Their small wedge-shaped shells, in colors of pastel pinks, purples, yellows, and whites, peeked out for a moment and then vanished, synchronized with the pulse of the ocean. It was as if the beach itself had come alive with confetti-like jewels, re-positioning themselves with every ebb and flow. I stood entranced, wondering how I’d missed this subtle dance for so many years. That morning marked the beginning of my quest to learn about these little clams that had been hiding in plain sight.
Life Beneath the Sand
Once my eyes were opened, I began observing and researching the coquina clams’ hidden world. I learned that each delicate clam is a filter feeder, siphoning in microscopic phytoplankton, algae, and organic particles from the surf. This constant filtering not only feeds the clam but also helps clean and clarify the coastal waters by removing excess nutrients. Coquinas live a fast-paced, transient life by necessity: they typically survive 1–2 years in the wild and can endure a mere few days without the ocean’s moving water.
No wonder they race to burrow when the waves recede—staying submerged is a matter of life and death, as they rely on the surf for both food and oxygen. In their brief lifespan, they continually ride the tides, migrate in swarms up and down the beach, and rebury themselves between each wave to avoid being swept away.
I found it astonishing that such small creatures possess the agility and tenacity to “surf” the waves and dig themselves back into wet sand within seconds, a graceful routine I had unknowingly witnessed that February morning.
Beyond their daily habits, coquina clams also undergo a remarkable life cycle beneath the sand. They spawn in the warmer months, releasing gametes into the water for external fertilization. The resulting larvae drift as plankton for a time before settling into the sand and metamorphosing into tiny clams. With no parental care to guide them these young coquinas must immediately fend for themselves in the surf zone. Perhaps it’s this independent, perilous beginning that drives them to cluster in large colonies—while they aren’t social in a communicative sense, hundreds of coquinas often live side by side in favorable spots, turning patches of wet sand into vibrant mosaics of color and life.
Walking the beach now, I recognize these patches: slightly raised, pebbly areas that, when a wave washes over, suddenly bristle with tiny siphons and feet as the clams feed and reposition. It’s humbling to realize that under each footstep, an entire hidden ecosystem of coquinas might be thriving.
Shells on the Shore: Beauty and Predation
With my new awareness, even the empty shells strewn along the high tide line told a story. I began to collect some of the colorful coquina shells scattered on the sand, marveling at their variety—no two looked exactly alike. Some were solid orange or yellow, others striped with purple and white, each as delicate as a butterfly wing. Many of these shells were intact, evidence of clams that had lived out their short lives or perhaps fallen prey to gentle endings. Others, however, bore mysterious perfectly round holes on their surfaces. At first glance, I thought a tiny drill had punched through them, and in a way, I was right. Those small holes are the signature of predatory snails that haunt the sands: creatures like moon snails (also known as shark’s-eye snails) and whelks that prey on coquinas by literally boring into their shells. These sand-dwelling snails wrap themselves around a clam and use a tongue-like organ called a radula—akin to a miniature saw—to drill a neat hole through the coquina’s shell, aided by acidic secretions to soften the calcium carbonate. Once the hole is complete, the snail devours the clam from within, leaving behind an empty, perforated shell as a grim calling card of the food chain in action.
Seeing those tiny “murder holes,” as beachcombers jokingly call them, on coquina shells transformed my perspective on the shell collections I had casually admired for years. Each shell in my hand represented a life that had been an integral part of the beach ecosystem. Some had been snatched by shorebirds or fish the instant they were exposed by the retreating tide, becoming breakfast for a sanderling or a pompano. Others, as the holes revealed, had been victims of an even stealthier predator under the sand. It struck me that every fragment and hollowed shell on the beach is evidence of a relationship—predator and prey, life and death intertwined on the shore. Instead of seeing a random assortment of pretty shells, I now saw a record of the beach’s vibrant food web written in calcium carbonate. The realization filled me with both wonder and respect: this sunny tourist beach holds quiet tales of survival as dramatic as any wilderness, if one knows where to look.
The Coquina’s Ecological Role
As I dug deeper (both into the sand and the literature), I discovered that coquina clams are far more than a footnote in the beach ecosystem—they are a keystone of coastal ecology. By filtering plankton and detritus from the surf, countless coquinas collectively act as tiny water purifiers, helping maintain water quality along the shore. Their presence in large numbers indicates a beach’s health; in fact, abundant coquina populations signal that the beach environment is robust and unspoiled. A stretch of sand teeming with coquina clams suggests natural, shifting sands and minimal human interference, as these clams thrive best where coastal processes remain undisturbed. In this way, coquinas are like a barometer for the shoreline: if I continue to find them at Cocoa Beach, it means the beach is still alive and supporting complex life.
Coquina clams also form a critical link in the food chain. Numerous shorebirds rely on them as a food source—those flocks of little sandpipers and plovers skittering at the water’s edge have, all along, been feasting on coquinas right under my nose. Fish that patrol the surf, like the Florida pompano and various kinds of drum (whiting), gulp them up as the waves churn the sand.
These coquina clam shells were found February 2025 on Cocoa Beach, Brevard County, Florida
Even ghost crabs and other scavengers benefit, feeding on clams that wash ashore. And of course, the predatory snails under the sand have a specialized taste for them. It’s a reminder that even a creature only an inch long can be a cornerstone of an entire food web, sustaining animals up the chain from mollusks to birds to fish. Standing on the beach now, I often pause and watch the frenetic chase of the shorebirds in the surf, aware that without the coquina clams beneath the foam, that familiar coastal ballet could cease to exist.
Humanity and the Coquina: Intertwined Histories
It’s not only animals that have interacted with coquina clams—we humans have a longstanding relationship with them as well. Historically, Floridians made use of coquinas as a food source. Local folklore and old recipes describe coquina broth and chowder, a delicate soup made by briefly boiling these tiny clams to extract their flavor.
Because each clam is so small, you’d need hundreds to make a pot of soup, so it’s not a common dish today except perhaps as a novelty. Still, the idea that the sands I walk on could literally be cooked into a chowder is a charming and earthy connection between food and place. Early indigenous peoples and European settlers alike would have recognized coquinas as an edible bounty in times when every bit of protein counted.
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Humans have also found value in the shells of coquinas beyond admiring their beauty. Over time, vast deposits of coquina shells on ancient beaches hardened into a soft limestone rock called coquina stone (the term “coquina” itself comes from the Spanish for “shellfish” or “cockle,” reflecting its composition).
In a fascinating twist of fate, this sedimentary rock—essentially millions of fused clam shells—became a building material. Here in Florida, coquina stone was quarried and used to construct some of our oldest structures. The historic fortifications in St. Augustine, like Fort Matanzas and Castillo de San Marcos, were built from coquina stone, their walls made resilient by a matrix of coquina clam shells.
I find it poetic that the same little clams I only just learned to appreciate have literally been the building blocks of human shelters that have stood for centuries. Even today, crushed coquina shells are used in landscaping and as decorative ground cover—perhaps you’ve seen driveways or garden paths that gleam with fragments of pink and purple shells.
Our lives overlap with the coquina in subtle ways: from the architecture of coastal Florida to the aesthetics of our beach towns.
Modern conservationists note another connection: by protecting natural beach dynamics, we also protect coquina populations, which in turn supports the whole ecosystem. This means being mindful about coastal development, beach renourishment projects, and even how many shells tourists collect. I’ve become more aware that picking up a few pretty coquina shells as souvenirs is fine, but we must leave plenty behind for the beach to recycle and for other creatures to use. For example shorebirds glean minerals from them. The humble coquina clam has given me a new appreciation for how intimately tied human activity is to the smallest inhabitants of the shore.
Reflections: Wonder in the Little Things
My journeys to Cocoa Beach were enhanced: what began as a casual observation in 2025 has blossomed into a profound shift in the way I experience the beach. I feel as if I’ve been given new eyes—now I notice the glint of tiny shells in the sand and know there’s life (or a story of life) attached to each one. The joy of discovery I felt upon noticing the coquina clams has reignited a childlike curiosity in me. It’s astounding that after decades of visits, there was still a secret to uncover on those familiar shores. This realization makes me wonder: What else have I been missing? It’s a reminder that nature has layers upon layers of wonder, even in places we think we know intimately. Sometimes it just takes a shift in perspective, a bit of knowledge, or a quiet moment of attention to peel back the veil.
In reflecting on the coquina clams of Cocoa Beach, I’ve learned not only about a specific species and its role in the world, but also about myself and the value of lifelong learning. These clams, in their smallness and ubiquity, taught me to slow down and appreciate the intricate tapestry of life at my feet. Now, each time I visit the beach, I smile seeing the waves bring in that rush of foam and sand, knowing a hidden troupe of coquinas is hard at work filtering water, dodging predators, and holding up the very balance of the shore. I often kneel down now, running my fingers gently through the wet sand to feel them retreat, and I silently thank them — for cleaning the water, for feeding the birds and fish, for building historic forts (unbeknownst to themselves), and for showing me that wonder can be found in the smallest of places. Cocoa Beach, through the lens of the coquina clam, feels like a brand new world I’ve been lucky enough to discover, even after all these years
I look forward to other hidden marvels awaiting discovery on my next visit.
References
Abbott, R. T. (1974). American Seashells: The Marine Mollusca of the Atlantic and Pacific Coasts of North America. Van Nostrand Reinhold Company.
Andrews, J. (1994). Shells and Shores of Texas. University of Texas Press.
Brusca, R. C., & Brusca, G. J. (2003). Invertebrates (2nd ed.). Sinauer Associates.
Denny, M., & Gaines, S. (2000). Encyclopedia of Tidepools and Rocky Shores. University of California Press.
Futch, C. R., & Burger, J. (1976). The ecology of coquina clams (Donax variabilis) in the southeastern United States. Marine Biology Journal, 34(2), 157-168.
Leal, J. H. (2002). Seashells of Southern Florida: Living Marine Mollusks of the Florida Keys and Adjacent Regions. Smithsonian Institution Press.
Mikkelsen, P. M., & Bieler, R. (2008). Seashells of Southern Florida: Marine Bivalves, The Bivalvia. Princeton University Press.
Morton, B. (1988). Particulate Matter Processing in Bivalves: An Overview. Journal of Marine Ecology, 19(3), 103-123.
Ruppert, E. E., Fox, R. S., & Barnes, R. D. (2004). Invertebrate Zoology: A Functional Evolutionary Approach (7th ed.). Cengage Learning.
Stanley, S. M. (1970). Relation of shell form to life habits of the Bivalvia. Geological Society of America Memoir, 125, 1-296.
Voss, G. L. (1980). Seashells of the Gulf and Atlantic Coasts. Houghton Mifflin Harcourt.
Wells, H. W., & Gray, I. E. (1960). Habitat selection and the distribution of the coquina clam (Donax variabilis). Ecological Monographs, 30(1), 55-77.
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Copyright 2024 All Rights Reserved Michael Stephen Wills
The evening ebb tide had left behind more than just a fresh line of seaweed and broken shells. As I walked along Cocoa Beach, the cool sand beneath my feet, a small shape caught my eye near the water’s edge. At first, it looked like detritus tossed ashore by the restless ocean. But as I stepped closer, I saw the unmistakable outline of a shark—its pale, twitching body lay on the damp sand.
Stopping to bend and examine it, my breath caught as I recognized its flattened, shovel-shaped head. This was a bonnethead shark (Sphyrna tiburo), one of the smallest members of the hammerhead family. Its eyes, positioned far apart on either side of its head, stared blankly at the sky. A thin film of seawater still clung to its sleek, streamlined body, reflecting the golden light of the rising sun.
Its scientific name, Sphyrna tiburo, reveals much about its nature and form. Sphyrna comes from the Greek σφῦρα (sphyra), meaning “hammer,” a fitting reference to the distinct shape shared by all hammerhead sharks. The species name, tiburo, is thought to have originated from an indigenous or Spanish term for small sharks found in the Caribbean and Gulf of Mexico. Together, these words encapsulate the bonnethead’s identity—a hammer-shaped predator of the shallow seas, yet one that stands apart from its larger, more formidable relatives.
Named for its distinctive cephalofoil—the flattened, bonnet-like shape of its head—Sphyrna tiburo plays an essential role in maintaining the balance of marine ecosystems. As a mid-level predator, it helps regulate populations of crabs, shrimp, and small fish, preventing any one species from overpopulating and disrupting the delicate food web. Unlike most sharks, the bonnethead is also partially omnivorous, consuming seagrass along with its usual diet of crustaceans and mollusks. This unique feeding behavior contributes to the health of seagrass beds, which serve as crucial habitats for many marine creatures.
Bonnetheads are harmless to humans, known for their non-aggressive nature and their surprising diet—unlike most sharks, they eat not just crustaceans and fish, but seagrass as well. Gentle foragers of the shallows, they are common in Florida’s coastal waters, where they glide just beneath the surface, their unique head shape helping them detect prey buried beneath the sand.
But this one would swim no more. It was too late. Whether it had fallen victim to a fisherman’s discarded catch, an injury, or something unseen—disease, pollution, or fluctuating ocean temperatures—it was impossible to tell. All I knew was that this creature, so perfectly adapted to the rhythms of the sea, had been cast ashore by forces beyond its control.
A wave surged forward, washing over the shark’s still body, as if the ocean itself fruitlessly nudged it to life. The rising tide swirled, lifting the bonnethead and carrying it back into its world.
As I stood watching the tide pull it away, I felt a strange mix of sorrow and reverence. The sea is full of life, but it also takes life in its endless cycle. The bonnethead had played its part in that vast, unknowable story.
And now, it was gone.
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Copyright 2025 All Rights Reserved Michael Stephen Wills
Walking along the shoreline of Cocoa Beach in the early morning light, I encountered a remarkable sight—a Nine-armed Sea Star (Luidia senegalensis) sprawled on the damp sand. Its long, slender arms stretched outward in a perfect starburst pattern, each limb tapering to a fine point. The sandy beige coloration of its body blended with the surrounding beach, accentuated by a darker stripe running down the center of each arm. Scattered around it were small shells and fragments, remnants of the ocean’s ebb and flow, testifying to the high tide that had deposited this fascinating creature ashore.
The scientific name Luidia senegalensis provides insight into the taxonomy and classification of this intriguing sea star. The genus Luidia is named after the 18th-century Portuguese naturalist Francisco Luid, who contributed significantly to marine biology. The species name senegalensis refers to its first recorded discovery along the coast of Senegal in West Africa. As a member of the phylum Echinodermata and the class Asteroidea, the Nine-armed Sea Star shares lineage with other starfish, sea urchins, and sand dollars, distinguished by their radial symmetry and water vascular system used for movement and feeding.
As I paused to observe it more closely, I marveled at the intricate details of its structure. Unlike the more familiar five-armed sea stars, this specimen had nine arms radiating from a small central disc. The surface of its body appeared smooth, with tiny tube feet lining the underside of each arm—a biological marvel designed for locomotion and feeding.
This starfish washed up on high tide. I seemed alive so I returned it to the surf during ebb tide, hoping the ebb current would return it to deeper water.
The Nine-armed Sea Star, common along Florida’s coastline, is a voracious predator within the benthic ecosystem. It primarily preys on bivalves such as clams and mussels, using a fascinating feeding strategy. Unlike most predators that rely on speed and strength, this sea star employs patience and ingenuity. It wraps its flexible arms around a bivalve, exerting a slow and steady force to pry the shell open. Once a small gap is achieved, the sea star everts its stomach through its mouth and into the prey’s shell, secreting digestive enzymes that liquefy the soft tissues within. This external digestion allows the sea star to consume its prey without the need for teeth or jaws—a perfect example of nature’s ingenuity.
Despite its delicate appearance, the Nine-armed Sea Star plays a crucial role in the marine ecosystem. By preying on bivalves, it helps regulate their populations, preventing overgrazing of seagrass beds and maintaining a balanced food web. Additionally, it serves as a food source for larger marine predators, such as fish and sea turtles. Its presence signifies a healthy intertidal environment, where nutrient cycles and predator-prey relationships are in dynamic equilibrium.
As I considered the sea star’s role in the ecosystem, I wondered about its journey to this point. These creatures undergo a fascinating life cycle, starting as tiny, free-swimming larvae that drift with ocean currents. Over time, they undergo metamorphosis, settling onto the seabed and gradually developing into their iconic star shape. The resilience and adaptability of these creatures are truly astounding, capable of regenerating lost arms and thriving in diverse habitats.
Realizing that this sea star likely found itself stranded by the receding high tide, I felt a sense of responsibility to help it return to its natural environment. Picking it up gently, I carried it toward the water’s edge, where the ebb tide was beginning to pull the sea back into its vast domain. With a final look at its striking form, I placed it carefully into the shallow waves, hoping that the ebb current would carry it back to the sandy seabed where it belonged.
As the waves lapped around my feet, I imagined the sea star resuming its journey, gliding along the ocean floor in search of its next meal. The interconnectedness of all marine life became evident in that moment—each creature playing its part in an intricate and delicate dance of survival.
Walking back along the shoreline, I reflected on the experience. My fleeting encounter with the Nine-armed Sea Star was a reminder of the wonders hidden beneath the ocean’s surface and our role in preserving them. Every tide brings new discoveries, and every ebb offers a second chance—for the sea star, and perhaps for us as well.
Cocoa Beach, with its gentle waves and abundant life, had once again provided an unforgettable encounter with nature. The starfish, now safely returned to the ocean, would continue its unseen work beneath the waves, a quiet but essential denizen of the underwater world.
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Copyright 2025 All Rights Reserved Michael Stephen Wills
Join me in reliving the enchanting evening on Cocoa Beach where my wife and I discovered a rare, intact Atrina rigida shell. Dive into the world of this fascinating bivalve through our story of ecological wonder and natural beauty.
The first light of dawn painted the horizon in soft hues of pink and orange as I strolled along Cocoa Beach, Brevard County, Florida, the heart of the Space Coast. It was winter 2017, and the cool breeze carried the salty scent of the ocean. My eyes scanned the sand for treasures, remnants of the ocean’s bounty washed ashore by the relentless rhythm of the tides.
The beach was a mosaic of shells, fragments of marine life that had completed their journey. Among them, a particular shell caught my eye – the Moon Snail or Necklace Shell, scientific name Naticidae, known for its smooth, spiraled form and glossy finish. The shell I found that morning was bathed in the early light, its curves reflecting the phases of the moon, hinting at the mysteries of the ocean from which it came.
The scientific name of the Moon Snail, belonging to the family Naticidae, finds its roots in the rich tapestry of classical languages, reflecting the distinct characteristics and historical context of these marine gastropods. The family name, Naticidae, is derived from the genus Natica, which in turn originates from the Latin word “naticula,” meaning “a little buttock.” This whimsical etymology is thought to describe the round, smooth, and somewhat globular shape of the Moon Snail’s shell, which can resemble a small, rounded form akin to a buttock.
The genus Natica was first described by the French naturalist Jean-Baptiste Lamarck in the early 19th century. The suffix “-idae” is a common ending used in zoological nomenclature to indicate a family level in taxonomy. Moon Snails are known for their distinctive appearance, with large, rounded shells that often have a glossy surface and intricate patterns. The family’s name not only captures the physical traits of these snails but also highlights the historical practice of using descriptive and sometimes playful terms in the classification of organisms.
As I admired the shell, memories of previous beachcombing adventures flooded back. The Moon Snail’s elegant design has always fascinated me, symbolizing both beauty and predation. The shell’s form, with its deep umbilicus and polished surface, is a testament to the life it once harbored.
Shell of the Moon Snail (Naticidae) found in the surf wash. Cocoa Beach, Brevard County, Florida
This winter past, January 2024, I enjoyed a rare sight – a live Moon Snail washed up on the shore. The small, compact form was nestled in the sand, its body partially retracted into its shell. I carefully picked it up gently. The snail’s soft, pale brown body contrasted with the hard, glossy shell, a perfect example of nature’s duality.
Observing the snail closely, I could see its large foot, a muscular organ that it uses for locomotion and burrowing into the sand. The foot’s underside, called the sole, was slightly sticky, aiding in its movement. The snail’s head, with its small, retractable tentacles, peeked out cautiously. These tentacles are equipped with sensory organs, allowing the snail to explore its surroundings and detect prey.
Moon Snails are predatory creatures, and their diet consists mainly of other mollusks. The snail’s mantle, a fleshy part of its body, secretes the shell and also houses the snail’s siphon. The siphon is used for breathing and detecting chemical signals in the water, crucial for hunting. The snail’s radula, a toothed, tongue-like organ, is a formidable tool for drilling into the shells of its prey. The Moon Snail wraps its large foot around its victim, creating an acidic environment that helps it bore a hole into the shell. This process can take several hours, after which the snail consumes the soft tissue inside.
Can you spot the work of the Moon Snail on these waves washed shells? Cocoa Beach, Brevard County, Florida
Aware of the snail’s delicate nature, I decided to return it to the surf. I tossed the creature far into the surf. It was a small act of conservation, a gesture to ensure that this remarkable creature could continue its journey.
Reflecting on the encounter, I felt a deep connection to the natural world. Beachcombing is not just about collecting shells; it’s about understanding the lives they represent and the intricate ecosystems they are part of. Each shell tells a story of survival, adaptation, and the relentless cycle of life and death in the ocean.
Cocoa Beach, with its endless horizon and rhythmic waves, is a sanctuary for these stories. The Space Coast, known for its technological achievements and space exploration, also offers a window into the ancient, natural world that thrives beneath the waves. The juxtaposition of human advancement and natural beauty is striking, reminding us of our place in the larger tapestry of life.
As I left the beach that January 2024 morning, the sun climbing higher in the sky, I carried a renewed appreciation for the ocean’s wonders. The delicate balance of predator and prey, the seamless integration of form and function, and the ongoing dance of life – all captured in the spiral of a Moon Snail shell.
Copyright 2024 Michael Stephen Wills All Rights Reserved
As you stroll along the beach, the beauty of whelk shells captures your attention. Ever wondered how these intricate structures form? Dive into the secrets of their creation, from cosmic origins to mollusk mastery. Discover the fascinating world within their shells
As I wander along the coast, the variety of seashells scattered across the beach fascinates me, particularly the whelk shells with their intricate designs and robust structure. This marvel of nature prompts me to delve into the science behind the formation of these shells, which are not just homes for the marine creatures but also a testament to the extraordinary processes that take place both within the organisms and across the cosmos.
The Architect: The Mantle of the Whelk
The journey of a whelk shell begins within the mollusk itself, specifically with an organ called the mantle. This organ is a marvel of biological engineering, responsible for laying down the calcium that forms the shell’s backbone. It secretes a matrix, a kind of biological scaffolding composed of proteins and polysaccharides, and then directs the deposition of calcium carbonate within this matrix to create the hard shell. The mantle’s work is meticulous, ensuring the shell’s growth and repair throughout the whelk’s lifetime.
The Building Blocks: Calcium, Carbon, and Oxygen
So why do the elements calcium, carbon, and oxygen play such a crucial role in shell formation? It’s a question of availability and suitability. These elements are abundant in the marine environment—calcium dissolved in seawater, carbon, and oxygen from both water and air. Their chemical properties allow the formation of calcium carbonate, a stable compound that can adopt various forms like calcite and aragonite, offering structural diversity for shells. Calcium carbonate’s moderate solubility enables mollusks to control shell formation precisely, and its biocompatibility ensures the process is safe for the living organism. Above all, the resulting crystalline structure provides immense strength and rigidity, a natural armor against predators and environmental challenges.
The Role of Calcium Carbonate
Calcium carbonate (CaCO₃) is not just a building block for shells; it’s a common substance that shapes our world. Found in rocks as calcite and aragonite, it forms limestone, the basis of pearls, and even the eggshells we encounter daily. This compound is an active player in both industrial applications and biological functions, serving as an agricultural amendment, a component in cement, and even a dietary supplement for humans.
The Mollusk’s Craft: Extracting from the Environment
Whelks are not alchemists; they do not create calcium carbonate from thin air. Instead, they are master extractors, pulling calcium and carbonate ions from their surroundings and depositing them as calcium carbonate to form their shells. The mantle is at the heart of this process, secreting proteins and enzymes to facilitate ion extraction from the water. The precise regulation of ion concentrations and pH ensures the calcium carbonate crystallizes in the desired form, perfectly tailored for the whelk’s protection.
Star-born Elements: The Cosmic Connection
It’s astounding to think that the elements composing whelk shells are not just earthly but cosmic in origin. The calcium (atomic number 20), carbon (atomic number 6), and oxygen (atomic number 8) that are so critical to these marine structures owe their abundance to the stars. The life cycles of stars, from their hydrogen (atomic number 1) and helium (atomic number 2) fueled births to the explosive supernovae and neutron star collisions that mark their deaths, generate and scatter these elements throughout the universe. These star-born materials eventually coalesced to form our solar system and Earth, providing the necessary ingredients for geological and biological phenomena, including the formation of the whelk shells I hold in my hand.
As I reflect on the shells before me, I am reminded of the interconnectedness of all things—from the inner workings of a tiny mollusk to the vast and violent furnaces of stars. These shells are not just remnants of life; they are cosmic artifacts, a reminder of our connection to the universe and the extraordinary processes that shape our existence.
Copyright 2024 Michael Stephen Wills All Rights Reserved
The same day I captured “Rosy Fingers of Dawn” and “Oceans Eons”, these still lives were found using a 100 mm macro lens.
Planting of Sea OatsShell of the Moon Snail (Naticidae) found in the surf washSmall whole and fragments, gastropod shells in fresh sea foamScattered remains of shell left by receding surfScattered remains of shell left by receding surfSmall whole and fragments, gastropod shells in fresh sea foamNacre, also known as mother of pearl, is an organic–inorganic composite material produced by some molluscs as an inner shell layer; it is also the material of which pearls are composed. It is strong, resilient, and iridescent.Shells washed on beach by wavesShells washed on beach by wavesSand Dollar fragment washed on beach by wavesShells washed on beach by wavesThere were submitted for publication by Getty
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Burrow of a creature with breathing hole in the wash wash. Fragment of crab carapace in wave washScattered remains of shell left by receeding surfSmall whole and fragments, gastropod shells in fresh sea foamScattered remains of shell left by receeding surfNacre, also known as mother of pearl, is an organic–inorganic composite material produced by some molluscs as an inner shell layer; it is also the material of which pearls are composed. It is strong, resilient, and iridescent.Shells washed on beach by wavesThis Moon Snail shell fragment was found in surf washShells washed on beach by wavesShells washed on beach by wavesScattered remains of shell left by receeding surf
Copyright 2022 Michael Stephen Wills All Rights Reserved
At first glance, Northerners may mistake this for fine snow blown on a bitter wind; but no, this is indeed a north wind, the temperature is above freezing, the material is beach sand. Keeping the sand in place is a concern for Brevard County.
A gull walked through wind textured beach sand, see here in early morning light. Dawn light on beach sand textured by wind, see here in early morning light.
Golden brown infructescences (seed heads) of Sea Oats grass on stalks growing from dunes, seen here in early morning light, are one element of this plant beneficial to the goal of keeping beach sands in place. Tall stalks and broad leaves catch blowing sand. Deep roots hold the plants in place, shallow root systems hold sand in place to form dunes.
Returning after staying away for COVID-19, we found new plantings of Sea Oats by the county.
Planting of Sea Oats.
Copyright 2022 Michael Stephen Wills All Rights Reserved
Walking mornings along the beach I encounter, one after the other, solitary sandpipers, called Willets. Before encountering this group, I noticed massed Black Skimmers feeding in the surf and, on the beach, a single, tiny (1/8th of an inch) fish that I scooped up and returned to the surf. My surmise is these several days around the full moon, fish were being birthed and swarming to provide a bounty that brough these solitary Willets together.
Copyright 2022 Michael Stephen Wills All Rights Reserved
Michael Stephen Wills Photography 