Fintuition

Practice with photo flashcards and quizzes, explore 66 species profiles, and now log every dive sighting in your own logbook.

Fintuition helps you learn and identify the fish of the Caribbean reef — whether you're a scuba diver, a snorkeler, or an armchair naturalist.

Explore a growing field guide of 60+ common Caribbean reef fish and sharks, each with a gallery of real underwater photos, a fun fact, and everything you need to recognize it in the water. Then log what you see and build a diving life list you'll actually keep.

FIELD GUIDE • 60+ species: parrotfish, surgeonfish, triggerfish, angelfish, groupers, wrasses, snappers, damselfish, butterflyfish, rays, moray eels, and reef sharks • Multiple photos per fish, so you learn what it really looks like • "Where to find" for every species: a distribution map built from real observation data, plus habitat, depth, and adult vs. juvenile size • Look-alike tips that call out the easy-to-confuse species and how to tell them apart • A rarity rating, so you know how likely you are to spot it

LEARN IT • Flashcards to drill names, shuffled each round • Identify Quiz — see a photo, name the fish • Search, sort, and filter by name, family, or rarity

DIVE LOGBOOK • Log every sighting: date (day or night dive), location and country, dive operator, dive site, depth, how many you saw, life stage, your own photo, and notes • Each species keeps its own sighting history • A global logbook gathers every dive in one place • Mark fish as "seen" to build your life list — logging a sighting checks it off automatically • Watch your progress as you tick off the reef

PERFECT FOR • Divers and snorkelers prepping for a Caribbean trip • Anyone who wants to finally name the fish they see • Marine-life lovers, students, and educators

Fintuition starts with the Caribbean, with more dive regions on the way. Photos are courtesy of the iNaturalist community under Creative Commons licenses, credited in the app.