Table 2.Atlantic Ocean pelagic habitat volume based on hypsometry, as presented by Menard and Smith (1966). The ocean pelagic habitat has been divided vertically into five zones: epipelagic, mesopelagic, bathypelagic, abyssopelagic, and hadopelagic (Hedgepeth, 1957). The latter zone occupies a small fraction of the ocean volume and is present in the Atlantic Oceanís Puerto Rico Trench (8400 m).
|Habitat Zone||Volume 106 km3||Percent volume in depth zones|
|epipelagic (0-200 m)||17311.6||4.8|
|mesopelagic (200-1000 m)||64382.4||17.7|
|bathypelagic (1000 - 4000 m)||213140.0||58.6|
|abyssopelagic (4000 - 7000 m)||68859||18.9|
|hadopelagic (>7000 m)||10.0||0.003|