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

     The jellyfish has many body systems, although they look quite simple.  Here are the main stuctures in a jellyfish:
 
     The body of a jellyfish is made almost completely of water.  It consists of an epidermis (on the outside), and a gastrodermis (the thick inside layer).  In between these two layers in the mesoglea, or the "jelly".
     Their nervous system is quite simple compared to humans.  They do not have a brain, but they have a "nerve net", which covers their entire body.  It controls the movement as well as the body functions. 
     In order to eat and digest food, they use their gastrovascular cavity to absorb the nutrients out of their prey.  
 
(Jellyfish)

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