abyssopelagic zone

/ ə-bĭs′ə-pə-lăj′ĭk /

1. A layer of the oceanic zone lying below the bathypelagic zone and above the hadopelagic zone , at depths generally between about 4,000 and 6,000 m (13,120–19,680 ft). The abyssopelagic zone ranges in temperature from 10° to 4°C (50° to 39°F).