What are some examples of hydrostatic skeletons?

You know slugs and snails? Their cute little tentacle-eyes are held up and out by hydrostatic skeletons, and they use hydrostatic movements to push themselves along on their foot. read more

Octopuses have hydrostatic skeletons, too- the biggest, importantly-solid part of their body is their eye, so they can fit through holes if their eye does (they have a solid beak to eat food, but that’s smaller than their eyes). read more

A hydrostatic skeleton, or hydroskeleton, is a skeleton supported by fluid pressure. Hydrostatic skeletons are common among simple invertebrate organisms. While more advanced organisms can be considered hydrostatic, they are sometimes referred to as hydrostatic for their possession of a hydrostatic organ instead of a hydrostatic skeleton. read more

Some examples are soft-bodied animals such as sea anemones and earthworms. Hydrostatic skeletons have a role in the locomotion of echinoderms (starfish and sea urchins), cnidarians , annelids , nematodes, and other invertebrates. read more