What are hydrostatic skeletons?

They alternately contract and expand their body segments along their length. Some examples are soft-bodied animals such as sea anemones and earthworms. read more

A hydrostatic skeleton, or hydroskeleton, is a skeleton supported by fluid pressure.[1] Hydrostatic skeletons are common among simple invertebrate organisms. read more

The key to all hydrostatic skeletons, and hydrostatic appendages, is that the shape of their body/appendage is cylindrical, with the body space being filled with fluid that can move around. This type of body/appendage plan is kind of a tube in a tube, or pretty much a tube of fluid surrounded by a tube of muscle. read more

Other articles where Hydrostatic skeleton is discussed: animal: Types of skeletons and their distribution: Hydrostatic skeletons are the most prevalent skeletal system used by animals for movement and support. read more