Two similar moon snails share the same beaches. The umbilicus is the fastest way to tell them apart.
| Feature | Shark Eye | Atlantic Moon Snail |
|---|---|---|
| Scientific name | Neverita duplicata | Neverita heros / Euspira heros |
| Umbilicus | Partly filled by a glossy callus | Open, unfilled |
| Overall colour | Tan to grey-blue | Cream to grey |
| Range centre | SE Atlantic & Gulf | N Atlantic to Cape Hatteras |
Both are predatory sand-burrowing snails — the drilled holes in bivalve shells on the same beach are usually their work.
See the full Shark Eye record.
View shell pageContinue Your Beachcombing Journey
Hand-picked next steps — chosen because they build directly on what you've just read.
Compare Similar Shells
Species and look-alikes worth studying side by side. Every card routes into the shell reference.
Family
Scallop
Rounded fan outline with regular radiating ribs and small 'ears' either side of the umbo. Colour varies from cream to bright orange and calico.
Explore ShellFamily
Olive Shell
Smooth polished surface with a very short spire and long narrow aperture. Cream to grey base overlaid with fine zigzag or lettered markings.
Explore ShellGroup
Whelk
Spiralled shells with a prominent siphonal canal. Coil direction (left vs. right handed) and shoulder ornament separate the common species.
Explore ShellFamily
Cockle
Rounded triangular outline with strong radiating ribs. Viewed edge-on, a paired cockle forms a heart shape.
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Shores connected to the shells, regions, and conditions on this page.
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Historic Golden Isle with generous public beaches — Driftwood Beach and St. Andrews shore deliver moon snails, jingle shells, and…
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Cape May
The southern tip of New Jersey — Sunset Beach yields the famous 'Cape May diamonds' (wave-polished quartz) alongside knobbed whelks, moon…
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Sanibel Island
Sanibel's east-west orientation sweeps Gulf shells onto its shore in exceptional variety — the reason it's the most celebrated shelling…
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Curated coastal favorites and specimen boxes that echo the story above.
A Learning Journey to Follow
New to Beachcombing
For beginners · 5 steps
The pathway most first-time visitors take. It moves calmly from the beginner's guide into shell identification, then out to the beach and back home to the journal.
- 1
Start Here
Beginner's Beachcombing Guide
The foundation — what to bring, when to walk, how to look.
Continue - 2
Learn the Shells
Shell Identification Guide
Meet the species you're most likely to find on your first walk.
Continue - 3
Take Care of Finds
How to Clean Seashells
Bring shells home the right way so they last for years.
Continue - 4
Record the Walk
Shell Discovery Journal
Field-note every find while the memory is still fresh.
Continue - 5
Take the Coast Home
Mini Curated Shell Box
A gentle first collection — the same shells you'll spot on the beach.
Continue