Creatures in the deep sea are living, adapted to its harsh environment.

Sea cucumbers live in the deep sea.

In the old days, people used to eat sea cucumbers.

Sea cucumbers live in the deep sea.

This forest is a habitation for many animals.

Many types of animals inhabit this forest.

Deep-sea fish have undergone various evolutions due to the harshness of their habitat.

This forest is a habitat for many kinds of animals.