Deep Blue
Ocean
More of Earth is underwater than mapped. The strangest life on the planet hides down there.
- 01
Fish that walk and breathe air?
Meet the fish that ditched the water for a walk and a breath of fresh air
- 02
This shark's older than the Mayflower
Seriously, this ancient shark has been around way longer than you think
- 03
Why tsunamis aren't the waves you think
it's not a surfing wave, but a wall of water miles across
- 04
Dolphins' brains never fully shut off
Half their brain naps while the other stays awake. Talk about a power nap!
- 05
Submarines designed to cheat crushing ocean pressure
Dive too deep and the ocean's pressure can instantly flatten a submarine. But these vessels hide a counter-intuitive secret to survive.
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The ocean sunfish gets eaten alive
The two-tonne Mola mola serves as a living buffet for 40 species of parasites and predators alike, surviving through sheer mathematical defiance.
Deep sea monsters that are actually real
From sharks with slingshot jaws to fish with transparent heads, the deep ocean is home to creatures that defy the laws of surface biology.
Sperm whales: the loudest animal alive
A sperm whale's click is loud enough to vibrate a human to death. Discover how these giants hunt in total darkness and sleep standing up.
Fish waste feeds plants in this symbiotic farm
It sounds like a mad scientist's experiment: fish poop fertilizing plants, all in a closed-loop system. But aquaponics is quietly revolutionizing how we grow food.
Whale barnacles grow into skin and bone
These seemingly harmless crustaceans don't just cling to whales; they physically embed themselves into their host's flesh and sometimes even bone.
Submarines designed to cheat crushing ocean pressure
Dive too deep and the ocean's pressure can instantly flatten a submarine. But these vessels hide a counter-intuitive secret to survive.
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This jellyfish cheats death by aging backwards
It's a living paradox. This tiny creature can literally turn back time
Sea spiders aren't really spiders
They look like spiders, but these ocean dwellers are something else entirely
Cold water gave sea spiders giant legs
Their chilly ocean home made these strange sea creatures grow to epic sizes
Your bathtub could hold a fortune
yep, there's enough gold in the ocean to make us all rich
Giant crabs defy the ocean's biggest rule
These deep-sea giants are growing larger than anyone predicted, breaking all the rules
Keeping the ocean out of underwater tunnels
It seems impossible to build a dry passage deep beneath the ocean, surrounded by crushing pressure and relentless water. Yet, engineers do it all the time.
Every episode in Deep Blue
Where does more than half of the Earth's oxygen supply come from?
What would happen to a standard basketball at the bottom of the Mariana Trench?
Approximately how much gold is dissolved within the world's combined ocean waters?
At what age does a Greenland shark typically reach reproductive maturity?
Explore other rabbit holes
All categories →Glass frogs, immortal jellyfish, and shrimp that punch faster than bullets.
Black holes, dying stars, and worlds where it rains diamonds.
Your body breaks every rule it taught you in biology class.
Tardigrades, viruses and the invisible kingdoms living on you.
Dinosaurs, mass extinctions and the planet that came before this one.
Quantum entanglement, time dilation and experiments that broke physics.
How machines, code, and inventions actually work.
Optical tricks, memory glitches and the colours that don't really exist.
Storms, eruptions, and creatures so deadly evolution made them glow.