The Ocean Deep
Like Duolingo, but for The Ocean Deep. Tomo turns the whole topic into a game you play five minutes a day, until it actually sticks.
For the part of you with thirty open tabs that never became anything.
Free during early access · No credit card · iPhone & Android

You've tried the other tabs
Thirty open tabs. Four facts you actually kept.
You watched. You nodded. By Sunday it was gone.
One answer, then back to scrolling.
Eight weeks. You meant to finish. You didn't.
Tomo turns The Ocean Deep into a game you actually finish. Levels, streaks, and quick quizzes that make it stick. Five minutes a day.
Where The Ocean Deep takes you
Dive beneath the waves to discover the mysterious world of the deep sea. Learn about strange glowing creatures, massive underwater mountains, and how life survives in the dark.
- 1
Layers of the Sea
- The Sunny Surface
- The Twilight Zone
- The Midnight Zone
- The Bottomless Trenches
- 2
Living in the Dark
- Animals That Make Their Own Light
- Surviving Huge Water Pressure
- Finding Food in the Deep
- Giant Squid and Deep Sea Monsters
- How Deep Sea Fish See
- Slow Motion Life Under Water
- 3
The Ocean Floor
- Underwater Volcanoes
- Hot Springs on the Sea Floor
- Mountains Taller Than Everest
- 4
Exploring the Unknown
- Deep Sea Submarines
- Robot Explorers
- Mapping the Dark
- Why We Know More About Space
- Protecting the Deep Ocean
4 sections · 18 units · 54 levels. Built to play, not to enroll.
Here's what playing it feels like
A real question from this course. Take your best guess.
What happens to the ocean's 'engine' once ye sail below the sunlit Epipelagic zone, matey?
Get it right to open this lesson and 53 more in the app.
You pick the voice
The Ocean Deep is taught in the The Pirate style: arr, learning be an adventure!. Want a different feel? In the app you can spin up the same topic in any of Tomo's teaching styles. Same facts, totally different vibe.
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Start The Ocean Deep today.
Download Tomo, search The Ocean Deep, and play your first lesson in under a minute.