When you reach 200 meters (656 ft), you enter the ocean's Twilight Zone
— an expansive world with almost no light.
The twilight zone is between 200 and 1,000 meters.
The record for the deepest dive by a human is 332 m (1,090ft).
Beyond this twilight region, at depths of 1000 m (3280 ft), you enter eternal darkness.
This is the Midnight Zone.
— an expansive world that leads down to abyssal plains.
These are reached at a depth of 4000 m (13,000 ft).
Next comes the Hadal Zone
at 6,000 m (19,000 ft).
The deepest part of this zone is the Mariana Trench,
which reaches 10,935 m (35,876 ft) deep
— making it deeper than Mount Everest is tall.
