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Animals that have a hydro-static skeleton have a fluid filled body cavity and a muscular body wall. This skeleton has no hard parts but a animal can squeeze the fluid from one area of the body to another under pressure to give him support.

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9y ago
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11y ago

A hydrostatic skeleton or hydroskeleton is a structure found in many cold-blooded organisms and soft-bodied animals consisting of a fluid-filled cavity, the coelom, surrounded by muscles. The pressure of the fluid and action of the surrounding muscles are used to change an organism's shape and produce movement, such as burrowing or swimming. Hydrostatic skeletons have a role in the locomotion of echinoderms (starfish, sea urchins), coelenterates (jellyfish), annelids (earthworms), nematodes, and other invertebrates (snails). They have some similarities to muscular hydrostats.
Sea anemones and earthworms do not have a single bone in their bodies. Instead, they are supported by pressure from a liquid which consists mainly of water in their cells and in spaces between their body. The hydrostatic skeleton allows the earthworm to burrow through the earth.

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11y ago

Hydrostatic skeletons - are skeletons which have no bony structure. Such as slugs and earthworms. And maybe even a jellyfish! Though I definitely know that Slugs and Earthworms are Hydrostatic skeletons

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12y ago

No. Hydrostatic skeletons are really just fluid-filled cavities surrounded by mucus and are mainly used by cold-blooded invertebrates.

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Wiki User

15y ago

earth worm

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Wiki User

14y ago

worms

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Wiki User

14y ago

Jellyfish.

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Anonymous

Lvl 1
3y ago

Butterfly

Jellyfish

Slug

Goldfish

Worm

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Anonymous

Lvl 1
3y ago

caterpillar jellyfish

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Anonymous

Lvl 1
3y ago
maggot 

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Anonymous

Lvl 1
3y ago

maggot, caterpillar, jellyfish

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Q: Which of these has a hydrostatic skeleton?
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