What kind of skeleton do they have? thanks soooo much.|||These don't really have skeletons. The squid has a "pen" which is made of calcium, but it's too small to support the body.
If I had to answer the question, I'd say that these creatures (all of them) have hydroskeletons -- fluid chambers which, when slightly pressurized, can provide some rigidity when/where needed.|||They don't have skeletons which is why they are called invertebrates. Squids do have a "cuttle bone" to provide some structure, but it isn't really a skeleton. The others have no calcium/cartilage structure of any kind.
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