Give me 3 types of skeleton

Here are 3 types of skeletons:

1. Endoskeleton: This is an internal skeleton, like the one found in humans and other vertebrates. It provides support, protection for internal organs, and allows for movement through muscle attachment.

2. Exoskeleton: This is a hard, external covering that supports and protects the body of an animal, such as insects, spiders, and crustaceans. It must be shed and regrown as the animal grows.

3. Hydrostatic skeleton: This type of skeleton is found in soft-bodied invertebrates like earthworms and jellyfish. It relies on fluid-filled internal cavities and the muscles surrounding them to maintain shape and produce movement.