The term "Abyssopelagic" refers to a layer of the ocean that lies between 4,000 and 6,000 meters (13,123 to 19,685 feet) deep. This zone is part of the larger pelagic zone, which encompasses all open ocean areas. The abyssopelagic zone is characterized by complete darkness, high pressure, and low temperatures, making it one of the least explored regions on Earth. Life in the abyssopelagic zone is sparse but unique, with organisms adapted to extreme conditions. Creatures such as deep-sea fish, squid, and bioluminescent organisms inhabit this area, often exhibiting fascinating adaptations like large eyes or the ability to produce light.