Identify
Photo ID + trait filters
For divers · marine life ID · field log
Know what you saw. Keep where you found it.
Identify marine life, build your own collections, and keep every dive, sighting and catch in one searchable field log.
Identify by photoFind the species you just saw.
Photo identification
Turn “what was that?”
into a species name.
Move across the reef. Seabook isolates the subject and gives you a name and the field guide facts that confirm it.
Hover a marker to identify itTap a marker
From dive to logbook, one continuous record.
Understand
Facts, habitats + look-alikes
Record
Dives, sightings + catches
Your field guide
becomes yours.
Save finds into trip lists, study sets, wish lists or any collection that matches how you explore.
Whale Shark
Rhincodon typus
Greater Blue-ringed Octopus
Hapalochlaena lunulata
Little Leaf Sheep
Costasiella kuroshimae
Pom-pom crab
Lybia tessellata
Keep the story around the species.
Photos, location, conditions, size and notes stay connected, whether the encounter happened on a dive, from a boat or at the shoreline.
- Link a species to the moment
- Save location and conditions
- Find any encounter later
27 mmax depth
12 specieslinked sightings
Offlinesaved on the boat
Made for the way you explore
Same ocean.
A field guide that adapts.
Bring the dive back with you.
Identify the species, attach them to a dive, and keep depth, conditions and photos together.
Download SeabookBring the dive back with you.
Identify the species, attach them to a dive, and keep depth, conditions and photos together.
Download SeabookTurn curiosity into field knowledge.
Build study collections, compare look-alikes, and connect structured facts to real sightings.
Download SeabookKnow the catch. Record the release.
Identify saltwater species and save size, weight, location, photo and release status.
Download SeabookKeep every small discovery.
Name what you find while snorkeling or tide pooling and grow a personal map of marine life.
Download SeabookThe ocean is already
being mapped.
Every identification and field record turns a fleeting encounter into something you can search, compare and return to.
ocean explorers
25K+sightings logged
35K+favorites saved
30K+marine species
1,700+People use Seabook
to look closer.
★★★★★“I Love using this App while diving and finding out cool facts about marinelife. I can totally recommend it!”
Dirkili2602Diver
★★★★★“I absolutely love this app especially if you are really into marine biology this is the app for you it gives you so much incredibly useful information and is super easy to use!”
MakaylaMarine Biology
★★★★★“It has really interesting stuff some I didn't even know.”
YellowRainbowFriend_Enthusiast
★★★★★“Seabook is a fantastic app for anyone interested in marine life! The user-friendly interface and stunning visuals make learning about the ocean fun and engaging.”
IndunilMarine Biology
★★★★★“Just the app I was looking for. Will definitely buy premium for next diving holiday.”
NarhhallasDiver
★★★★★“Love it! So easy to identify the fish you have seen using the search. This app is the second buddy for me now!”
JamesDiver
★★★★★“This app is going to be a big step in my journey. I want to be a marine biologist in the future, so wow, this app is spectacular for me!”
MatheusStudent
★★★★★“It is a very good app. The photos are of very good quality. I want to be a marine biologist, and I really like apps with this kind of background.”
SAMUELStudent
★★★★★“L'application est vraiment top! Super bien faite, belles couleurs, agréable à regarder, jolies photos, très pratique pour trouver des informations.”
L'Diver
★★★★★“I loved this app! I am a student trying to get a scholarship in marine biology and this app is helping me so much!”
LuludonagiStudent
★★★★★“Very, very, very good indeed! I wanted to be a biologist and I will get a lot of help with this app. Very practical, very fun, one of the best apps I have ever used!”
MollyStudent
★★★★★“I recommend it! I really like marine life, and this app has helped me a lot with my hobby.”
Alice MariaEnthusiast
★★★★★“Very good to learn more about fish since I want to be a marine biologist!”
JhanpierStudent
★★★★★“I LOVE IT! It talks about various marine animals, very easy to use. I highly recommend it for people who want to be marine biologists!”
ThainneStudent
★★★★★“Very useful for finding fish species and getting information. Very beautiful and well-functioning.”
ViolaEnthusiast
★★★★★“I love this! I want to study marine biology and this is perfect to start little by little and learn more.”
NathaliaStudent
★★★★★“This app is my favorite. It teaches you so much about fish, corals, their colors, and where they live. You can learn a lot!”
AndreaMarine Biology
★★★★★“Great! I like biology so this is perfect for me.”
맛잇는만듀Enthusiast
01 / 18
Seabook Journal
Go somewhere worth remembering.
Species guides, field notes and practical inspiration for the next place you take Seabook.
- Diving Tanzania: A Journey Through East Africa's Underwater Realms Explore Tanzania's diverse dive sites, from the vibrant Mnemba Atoll to Mafia Island's whale sharks and Pemba's deep walls. Discover rich marine life and conservation efforts.
- Singapore's Unexpected Underwater World Discover Singapore's surprising underwater realm. This guide explores its unique macro life, artificial reefs, and conservation efforts across Pulau Hantu, Sisters' Islands, and other dive sites.
- Bosnia and Herzegovina: Diving the Adriatic's Hidden Corner Dive Bosnia and Herzegovina's unique 20 km Adriatic coast near Neum. Explore temperate Mediterranean life: octopuses, wrasses, seabreams in sheltered bays and rocky reefs. Clear waters, mild currents await.
Useful answers.
No deep dive required.
How does species identification work?
Use a photo, search by name, browse the marine-life database, or narrow candidates with traits such as color, shape, habitat and region.
What can I keep in Seabook?
Save species, sightings, collections, dive logs and catch details with photos, notes, date, location, depth, size and conditions.
Does it work offline?
Yes. Browse species and add field records without a signal, then sync when you reconnect.
Who is Seabook for?
Scuba and freedivers, marine biology students, ocean anglers, snorkelers, tide poolers and anyone curious about marine life.
How many species are included?
More than 1,700 marine species with photos, structured attributes and identification information. The guide keeps growing.
What is included free?
Free includes part of the species library, dive logs, collections, cloud sync and backup. Premium unlocks the full database, photo identification, additional photos and advanced filters.
See it. Name it.
Keep it.
Download Seabook free for iOS and Android.