Worldwide zone of deep ocean waters, about 3,00013,000 ft (1,0004,000 m) below the surface.
It is inhabited by a wide variety of marine forms, including eels, fishes, mollusks, and others.
Worldwide zone of deep ocean waters, about 3,00013,000 ft (1,0004,000 m) below the surface.
It is inhabited by a wide variety of marine forms, including eels, fishes, mollusks, and others.
Britannica Concise Encyclopedia. Краткая энциклопедия Британика. 2012