Moon jellyfish?

Question

Do jellyfish have any internal organs? I did not notice any when I observed some moon jellyfish at the aquarium yesterday.

Answer 1

They don't have brains or a heart, but they do have a basic nervous system that helps them swim and react to danger. Also they have special digestive organs and reproductive organs.

For more details about jellyfish anatomy you can check out the sources below. Oh, and I like your username! :)

Answer 2

they have stinging cells but not enough to penetrate human skin. Look very cool under a blue light