Does a jellyfish have hydrostatic skeleton?

Yes, jellyfish do have a hydrostatic skeleton.

Here's why:

* Hydrostatic Skeleton: This is a type of skeleton that uses fluid pressure within a closed body cavity to provide support and structure.

* Jellyfish Structure: Jellyfish have a bell-shaped body filled with a gelatinous substance called mesoglea. This mesoglea is essentially water, giving the jellyfish its shape and allowing it to move.

* Movement: The jellyfish contracts its muscles around the bell, squeezing the water and creating a force that propels it forward. The mesoglea acts as a hydrostatic skeleton, resisting the compression and providing support.

In summary, the water-filled mesoglea in jellyfish acts as a hydrostatic skeleton, providing both structure and enabling movement.