What do they call animals that dont move?

There isn't a single, universally accepted term for animals that don't move. This is because "not moving" is a very broad category, and it can mean different things depending on the context.

Here's a breakdown of some terms you might use depending on the situation:

* Sessile: This term is used for animals that are attached to a surface and don't move around freely throughout their lives. Examples include barnacles, corals, and sponges.

* Immobile: This term is more general and simply means not moving. It can be used for animals that are temporarily inactive, such as animals hibernating or in a state of torpor.

* Dormant: This term refers to a state of inactivity characterized by a slowed metabolism and reduced activity. It's commonly used to describe animals that are inactive during periods of cold or drought.

* Paralyzed: This term refers to animals that are unable to move due to injury or disease.

* Dead: This term is used to describe an animal that is no longer alive and therefore cannot move.

It's important to note that even sessile animals can exhibit some movement. For example, barnacles have appendages that they use to filter food from the water. Additionally, many animals that appear immobile may actually have subtle movements that are not easily observed.

Ultimately, the best term to use depends on the specific situation and what you are trying to convey.