Midnight Zone - Woods Hole Oceanographic Institution

The midnight zone, or bathypelagic, extends to about 4,000 meters (about 13,100 feet), which reaches the ocean floor in many places is in perpetual darkness.

Great white sharks are diving thousands of metres deeper than

Five feet above a rising ocean

Ocean Encounters: Weirdly Wonderful Creatures of the twilight zone

Great white sharks are hanging out in the twilight zone and

The ocean's mysterious twilight zone may help fight climate change

WOODS HOLE OCEANOGRAPHIC INSTITUTION AUTONOMOUS DEEP SEA ROBOT

The Ocean Twilight Zone : Woods Hole Oceanographic Institution

Deep-sea community - Wikipedia

Ocean Twilight Zone Interactive

Large Pelagic Predators Found Lurking in Deep Ocean for Unknown