1) Davy jones 2) Ocean bottom 3) Ocean floor 4) Sea bottom 5) Seabed 
[adj] - relating to ocean depths between 200 and 2000 meters (corresponds to the continental slope)
bathyal 1. A reference to the biogeographic region of the ocean bottom between the sublittoral and abyssal zones. 2. Pertaining to the environment of deposition and the organisms of the ocean between depths of 200 meters [656 feet], the edge of the continental shelf, and 2000 meters [6560 feet]. The bathyal environment is intermediate between the ...
adjective relating to ocean depths between 200 and 2000 meters (corresponds to the continental slope)