The abyssal zone or abyssopelagic zone (from the Greek ἄβυσσος - meaning bottomless) is a layer of the pelagic zone of the ocean. At depths of 4,000 to 6,000 metres (13,000 to 20,000 ft).
This zone remains in perpetual darkness. The abyssal zone has temperatures around 2 to 3 °C (36 to 37 °F). The water along the seafloor of this zone is actually devoid of oxygen, resulting in a death trap for organisms