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Unique Physiology of Jellyfish
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Jellyfish Characteristics
Anatomy
Unique Physiology of Jellyfish
Lifestyle of jellyfish
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Cnidarians

The jellyfish is a very unique animal, here are some of the things that make them what they are:
 
  • They have little control over their movement, and free-float most of the time.  But in order to move up and down, they use their hydrostatic skeleton.  The hydrostatic skeleton uses water pressure to contract their muscles.
  • Jellyfish do not have a respiratory system, because their skin is so thin.  They get oxygen through diffusion.

(Jellyfish)

Below is what diffusion looks like
diffusion.gif