The Hadal Zone
Trenches below 6000 meters host adapted life despite crushing pressure and permanent darkness.
Bioluminescence
Deep-sea creatures produce light for hunting, mating, and camouflage in a lightless world.
Exploration Gap
More people have walked on the Moon than visited the deepest ocean point, Challenger Deep.
Why Oceans Matter
They absorb heat and CO2, regulate climate, and supply oxygen via phytoplankton.