Shell Family Hub
Moon Snails: Perfect Spheres of the Intertidal
Round, smooth, and predatory — moon snails leave the neat drill-holes you'll spot on countless shells along the wrack line.
Moon snails (family Naticidae) are the burrowing predators responsible for many of the countersunk holes you find in cockles, clams, and small bivalves. Their own shells are near-spherical, patterned with delicate coloration, and highly collectible.
This hub links moon-snail identification pages, prey/predator storytelling, and the beaches where whole specimens are most likely to appear.
Featured Shells
Species and family pages that anchor this hub
Sinistrofulgur sinistrum
Lightning Whelk
A large sinistral (left-handed) whelk of the U.S. southeast, prized for the streaks of colour that run down its spire.
Semicassis granulata
Scotch Bonnet
Rounded helmet shell with a woven basket-check pattern — North Carolina's state shell.
Scaphella junonia
Junonia
A deep-water volute famous on Sanibel Island for its cream body and neat rings of chocolate spots.
Americoliva sayana
Lettered Olive
South Carolina's state shell — a glossy cylindrical olive with fine zigzag markings that resemble handwriting.
Naticidae
Moon Snail
Rounded, polished gastropods (family Naticidae) that leave the neat drilled hole on so many empty bivalves.
Clypeasteroida
Sand Dollar
Flattened burrowing echinoderms with the five-pointed 'flower' pattern on top — not a shell at all, but a sea urchin test.
Strombus alatus
Florida Fighting Conch
A compact, heavy-bodied true conch of the U.S. southeast — Florida's most reliably found strombid on Gulf beaches.
Triplofusus giganteus
Florida Horse Conch
Florida's official state shell and one of the largest gastropods in the Americas — a spindle-shaped predator that can exceed two feet in length.
Fasciolaria tulipa
True Tulip
A smooth, spindle-shaped Gulf and Caribbean gastropod with soft cream and streaked-brown markings — the larger of Florida's two common tulips.
Continue Exploring
Guides, articles, and coastal favorites
A curated set of related reading and coastal-favorite collections drawn from the taxonomy behind this hub.
Continue Your Beachcombing Journey
Hand-picked next steps — chosen because they build directly on what you've just read.
Guide
Shark Eye vs. Atlantic Moon Snail
Hand-picked next step from the editors.
Curated Shell Box
The Collector Box
See these ideas in a curated collection.
Guide
Lightning Whelk vs. Knobbed Whelk: A Field ID
Hand-picked next step from the editors.
Curated Shell Box
The Signature Shell Box
See these ideas in a curated collection.
Discover More Coastal Inspiration
Curated coastal favorites and specimen boxes that echo the story above.