“From birth, man carries the weight of gravity on his shoulders. He is bolted to earth. But man has only to sink beneath the surface and he is free.”
Before KAI vs. After KAI
The difference between a failed photo and a publishable one often comes down to 3 settings. KAI teaches them one by one.
Everything you need to progress
532 micro-lessons
Photography, marine biology, settings, composition. 5 min per lesson, illustrated.
Atlas BETA mobile
Premium access to the marine encyclopedia BETA. 2,215 identifiable species, accessible anywhere in the world from your mobile.
Gamification
Pearls, badges, streaks. Stay motivated Duolingo-style, ocean edition.
6 languages
French, English, Spanish, German, Italian, Dutch.
Mobile + Web
Review on the boat, prepare the dive at home. Synced everywhere.
Offline Dive Deck
Dive planning, Deep Words, site briefs. Works without a connection.
Dive Deck, your diving companion
Five practical tools included with your subscription, designed to prepare, organise and secure every dive.
Pack My Dive Bag
Smart checklist that adapts your gear list based on dive type, climate and luggage.
Destination comparator
Find your next dive destination by season, budget and biodiversity. Scored out of 100.
Dive emergencies
Emergency card by country, nearby hyperbaric chambers and 16 medical protocols. Available offline.
Deep Words
Glossary of 256 diving terms translated into 6 languages. Essential for diving abroad.
My Trips
Organise your dive trips with checklists, notes and documents. Works 100% offline.
Choose your speciality
They transformed their dives
“An essential app if you want to improve your underwater photo and video. Progress and results are immediate! This training is designed by a recognised specialist for amateurs and beginners: simple language, image examples, clear explanations!”
“I'm so happy with the course! It's clear and fascinating. The cheat sheets will be really useful, I'm taking them before my dives in Egypt.”
“I learned a lot about underwater photography, and I've been doing competitive photography for years. It's thorough, sometimes funny, and really well thought out.”
“A rare approach and real professionalism. Benjamin knows his subject and conveys it with a clarity that's often lacking in this field.”
“Thank you so much for the editing and the explanations. Since I have more photos to process, it will really help me better understand what I'm doing.”
Choose your plan
Start free, go premium when you're ready.
- 50 free lessons
- Daily quiz
- Basic Atlas (100 species)
- Offline Dive Deck
- 532 full lessons
- Full Atlas (2,215 species)
- Photo guide: 11 chapters
- 6 languages
- Priority support
- All Premium, forever
- New content included
- Exclusive VIP badge
- Priority beta access
Everything you need to know
Benjamin Coste
Passionate diver and underwater photographer, I created KAI because I wish I'd had this tool when I started. Underwater photography shouldn't be reserved for an elite. Every diver deserves to bring back images that tell the story of what they experienced beneath the surface.