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Ocean ZonationThe ocean can be divided into many zones. The ocean bottom is the(1)benthic zone and the water itself (of the water column) is the (2)pelagic zone. The (3)neritic zone is that part of pelagic zone thatextends from the high tide line to an ocean bottom less than 600feet deep. Water deeper than 600 feet is called the (4)oceanic zone,which itself is divided on the basis of water depth into the(5)epipelagic, (6)mesopelagic, and (7)bathypelagic zones.These zones roughly correspond to three other zones divided on thebasis of the amount of sunlight they receive. In the (8)euphoticzone, enough light penetrates to support photosynthesis. Belowthat lies the (9)disphotic zone, where very small amounts of lightpenetrate. 90% of the space in the ocean lies in the (10)aphoticzone, which entirely devoid on light.