Question

Most animals that live in deep oceanic water are (A) Primary consumers
(B) Secondary consumers
(C) Tertiary consumers
(D) Detritivores

Answer 1

The organisms which live in deep oceanic water do not get sunlight in a good amount or even you can say that no sunlight, which is very essential for photosynthesis and living life.

Complete step by step answer:
Most animals that live in deep oceanic water are Detritivores. Deep oceanic creatures have to survive in harsh conditions like there are hundreds of bars of pressure, small amounts of oxygen are available to them, very little food, no sunlight, and constant, extreme cold. Most creatures have to depend on decomposing plant and animal parts as well as feces.

Additional Information: As there is a lack of light, the creatures require special adaptations to find food, avoid predators, and find mates.Most animals that live within the deep oceans have very large eyes and their retinas are constructed mainly of rods, which increases sensitivity.
It was seen that many animals have developed large feelers to replace the peripheral vision. As it is very difficult to find mates, many of these fish have evolved to be hermaphroditic, eliminating the need to find a mate. In order to increase mating possibility, many creatures have also developed a very strong sense of smell to detect the chemicals released by mates.
So, the correct answer is ‘Detritivores’.

Note: The term deep-sea gigantism tells about an impact that living at such depths has on some creatures' sizes, especially relative to the scale of relatives that live in different environments. These creatures are generally bigger than their counterparts.