Deep sea creatures

A giant isopod (Bathynomus giganteus)

The term deep sea creature refers to organisms that live below the photic zone of the ocean. These creatures must survive in extremely harsh conditions, such as hundreds of bars of pressure, small amounts of oxygen, very little food, no sunlight, and constant, extreme cold. Most creatures have to depend on food floating down from above. These creatures live in very demanding environments, such as the abyssal or hadal zones, which, being thousands of meters below the surface, are almost completely devoid of light. The water is between 3 and 10 degreesCelsius and has low oxygen levels. Due to the depth, the pressure is between 20 and 1,000 bars. Creatures that live hundreds or even thousands of meters deep in the ocean have adapted to the high pressure, lack of light, and other factors. Picture Source: National Geographic

Frilled Shark. Humans rarely encounter frilled sharks, which prefer to remain in the oceans' depths,
up to 5,000 feet (1,500 meters) below the surface.

Giant Spider Crab.

Atlantic Wolffish Pair

Fangtooth Fish

Six-Gill Shark

 Giant Tube Worms

Vampire Squid

Pacific Viperfish

Picture Source: Collected from Internet