Seashell Identifier: ShellRef

ShellRef is a 100% offline seashell identifier app and shell identification field guide for beachcombers on the Atlantic, Pacific, and Gulf coasts of North America. Every entry is expert-curated with real field-identification data, not AI guesswork. No internet required, no sign-up — just open it and identify your beach finds.

Found a beautiful shell on the beach? ShellRef tells you exactly what it is, where it came from, whether you can legally take it home, and what to watch out for — all in one tap. Whether you're asking "what shell is this?" or planning a shelling trip, ShellRef gives you the answer and the legal context.

WHAT'S INSIDE
• Shell identification across the Atlantic, Gulf, and Pacific coasts
• Identify marine shells: gastropods, bivalves, whelks, conchs, moon snails, olive shells, augers, and more
• Bag limits and collecting rules so you know what's legal to keep (no other app does this)
• Best shelling beaches and when to go
• Live-animal warnings — don't take an occupied shell
• Seashell identification by picture and field marks — clear photos on every entry
• 40 entries free — the species every beachcomber meets
• Unlock all 80 entries with Pro — rare finds, deep-water washups, and Pacific species

PREMIUM FEATURES — SHELLREF PRO
Upgrade to Pro ($4.99/year) and unlock:
• Full access to all 80 species including 40+ rare and exotic specimens — deep-water washups, Pacific species, and collector shells
• Detailed regional habitat maps for Atlantic, Gulf, and Pacific coasts
• Advanced safety and toxicity guides for hazardous shells
• Expert look-alike identification tips — distinguish similar species with confidence
• Pro Quiz mode — test your shell ID skills with the full 80-specimen database
• Ad-free experience — no interruptions on the beach

Subscription auto-renews annually. Cancel anytime. Restore purchases supported.

BUILT FOR BEACHCOMBERS
Categories cover gastropods, bivalves, and more, with coverage across the Atlantic Northeast, Atlantic Southeast, Gulf Coast, and Pacific Coast. Whether you're beachcombing for the first time or building a serious shell collection, ShellRef is your complete seashell field guide.

WHY SHELLREF
• 100% offline — works on the beach with no signal, no Wi-Fi, no data
• Includes what's legal to keep — collecting rules and bag limits
• Finds you the best beaches for shelling, not just the species name
• Complete beachcombing companion — identify, collect, and stay legal
• Expert-curated entries, not unreliable AI photo guesses
• North American coastal focus for beachcombers

WHO USES SHELLREF
• Beachcombers identifying shells on shorelines
• Shell collectors building reference collections
• Families on beach trips curious about finds
• Snorkelers and divers identifying marine shells
• Coastal travelers exploring new beaches
• Students learning about marine gastropods and bivalves

Download ShellRef and identify your beach finds today.