A place you have probably never been: Suruga Bay, 70 miles southwest of Tokyo, off the coast of Mount Fuji. This is the deepest and darkest part of the bay.
The angler fish can walk across the sand with fins that have elbows. A remotely operated vehicle, or ROV, can broadcast pictures back to a fish, and you. Inhabitants in the deep dark include eels and a giant spider crab, the largest in the world. These crabs can grow to up to 12 feet across.