living at a depth between 1000 m and 4000 m, but well off the bottom 
the open ocean or pelagic zone that extends from a depth of 1000 to 4000 meters below the ocean surface.
found in the depths of the sea
ocean depths between about 2,000-12,000 feet (600-3,600 m)
the open ocean or pelagic zone that extends from a depth of 1000 to 4000 meters below the ocean surface.
living at a depth between 1000 m and 4000 m, but well off the bottom
bathypelagic 1. The biogeographic realm of the ocean, or living in the depths of the ocean; especially, between about 1000 and 4000 meters (3,280 and 13,120 feet). 2. A reference to creatures living in the bathyal region of an ocean. 3. Found in the depths of the sea.