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Relating to or inhabiting the layer of the water column of the open ocean that lies between the mesopelagic and abyssopelagic layers at depths of about 1,000 to 4,000 meters (3,280 to 13,120 feet).


(Biology) of, relating to, or inhabiting the lower depths of the ocean between approximately 1000 and 4000 metres


(ˌbæθ ə pəˈlædʒ ɪk)

pertaining to or living in the bathyal region of an ocean.
References in periodicals archive ?
Its flabby body, typical of organisms inhabiting the mesopelagic or bathypelagic zone (Randall & Farrell, 1997), had an epidermis entirely covered with mucus, with no ectoparasites detected.
Comparative chemosensitivity to amino acids and their role in the feeding activity of bathypelagic and littoral crustaceans.
Tripodfish (Aulopiformes: Bathypterois) locomotion and landing behavior from video observation at bathypelagic depths in the Campos Basin of Brazil.
From there it's the Bathypelagic Zone, down to 4000 meters.
The fourline snakeblenny, Arctic grayling, Arctic char, lake trout, ninespine stickleback, and Pacific sand lance are benthopelagic (species that float or swim just over the floor of the sea); the Pacific herring, sardine cisco, Arctic cisco, and capelin are pelagic-neritic (inhabiting shallow coastal waters over the continental shelf); and the polar cod is bathypelagic (occurring in the mid-waters below the level of light penetration, which, depending on the authors, may lie between 900 m and 4000 m).
5) inhabits mesopelagic to bathypelagic zones at depths of 200 to 6930 m (Nielsen and Merrett 2000; Love and others 2005).
Relationships between otolith size and fish size in some mesoplagic and bathypelagic species from the Mediterranean Sea (Strait of Messina Italy).
2011) provided evidence that small meso- and bathypelagic fishes constitute an important part of the diet of this species in this area.
Goncaus madokai paralarvae and juveniles occur at epipelagic depths (6), (9), but as females approach maturity, they descend to mesopelagic and bathypelagic depths (10), where spawning is thought to begin in winter (11).
Sablefish (Sullivan and Smith, 1982) and many other mesopelagic and bathypelagic fishes living at great depths (Siebenaller and Somero, 1989; Drazen, 2007) have been shown to have higher water content and lower protein and lipid content than species living at shallow depths.