pelagic zone
any water that is neither close to the bottom nor near the shore
aphotic zone
portion of a lake or ocean where less than 1% of sunlight penetrates
abyssal zone
layer of the pelagic zone of the ocean; the deeper part of the midnight zone which starts in the bathypelagic waters above, the area below the abyssal zone is the sparsely inhabited hadal zone
bathyal zone
part of the pelagic zone that extends from a depth of 1000 to 4000 meters (3300 to 13000 feet) below the ocean surface. It lies between the mesopelagic above, and the abyssopelagic below
photic zone
uppermost layer of water in a lake or ocean that is exposed to sunlight more than 1% of surface illumination