Fins - Fish ID

Fins identifies fish, nudibranchs and other invertebrates from a photo or guided step-by-step search, in seconds, wherever you are in the world.

Whether you're logging a dive in Raja Ampat, snorkeling the Great Barrier Reef, or just curious about something you spotted at the beach, Fins brings the ocean's species to your fingertips.

AI Marine Species ID
Upload or snap a photo and let Fins identify the species instantly. Or use guided search to narrow it down step by step, no photo needed.

Dive Logbook & Snorkel Tracker
Record every dive, log your sightings, and build your personal life list. Your ocean story, beautifully kept.

Marine Trivia & ID Games
Test your reef knowledge, earn points, and climb the leaderboard. Learning the ocean has never been this fun.

Badges & Achievements
Unlock badges for new species, dive milestones, and rare finds. Spot a rare nudibranch? There's a badge for that.

Liveaboard & Travel Planning
Browse and book liveaboards across the world's top dive destinations, all inside the app.

Join the Movement
Every sighting you log contributes to ocean awareness and conservation. You're not just exploring, you’re helping.

Community
Share sightings, solve marine mysteries together, and connect with a growing global community of ocean lovers.

Who Fins Is For
Divers & Snorkelers — Log dives, ID species, relive every underwater adventure.
Underwater Photographers — Name your shots and build your own species collection.
Liveaboard Travelers — Make the most of every surface interval.
Students & Educators — A modern, visual marine field guide for the classroom or the reef.
Citizen Scientists — Every sighting you log matters.
Curious Explorers — Discover the ocean from anywhere on earth.

Fins is your companion for exploration, learning, and conservation.
Download Fins and dive smarter.