The Best Fish ID App for Divers & Snorkelers

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Why ocean lovers choose fins

Identify marine life, log dives, connect with nature, and plan your next underwater adventure — all in one place. FINS is your oceanic field guide, powered by AI.

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Instant Marine ID

Snap or upload a photo and get fast, accurate identification of 5,000+ fish and invertebrates.

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Log Dives & Sightings

Track what you see and where you saw it — build your own marine life logbook.

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Explore & Protect

Plan dive trips, earn badges, and make every dive count for ocean conservation.

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Identify 5,000+ marine species: just upload or snap a photo to get fast & accurate fish, nudibranch, and other invertebrate ID's.

Screenshot of Fins logbook

Log your dives & sightings: keep track of every encounter and experience — all in one place.

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Learn more about what you see: from clownfish to cuttlefish, explore behavior, habitat, and fun facts.

Screenshot of Fins logbook

Explore top dive destinations: discover incredible places to dive and snorkel — from Komodo to the Cocos, plan your next trip easily in the app.

Fins completely changed the way I dive. It's like having a marine biologist in my pocket! Total game changer, I've told all my buddies about it.
_{Adrian Johnson}

For sure my favorite feature is the logbook. It's so intuitive, pretty, and easy to use. As a newer diver it helps me stay organized, I can keep track of my dive profile and all the animals I saw in one place. Love it!!!
_{Alina Foster}

I learned about this app on a recent liveaboard trip in Indonesia and absolutely love it. It’s been great for identifying fish and inverts. During surface intervals, I even used it to explore ideas for future liveaboard trips while chatting with other guests.
_{Hortensia Miguel}‍