The Best Fish ID App for Divers & Snorkelers

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.

Illustration of person inspecting a fish with magnifying glass

Instant Marine ID

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

A cute illustration of a diver.

Log Dives & Sightings

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

A cute illustration of a woman hugging the world.

Explore & Protect

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

A moorish idol in the ocean. FINS app

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.

A caribbean shark in the ocean. FINS App

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

A green sea turtle in the Maldives ocean. FINS app

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}‍