We just learned about the Darth Vader Jellyfish that lives in the deep sea and looks like Darth Vader's helmet.
Another type of jellyfish is the Barrel Jellyfish, also called the dustbin-lid jellyfish, frilly-mouthed jellyfish, or rhizostoma pulmo.
This type of jelly lives in the Atlantic ocean, and the Mediterannean sea.
It is very small, only usually growing around 16 inches.
(from: wikipedia - rhizostoma pulmo)
(from: youtube - Swimming with a giant Barrel Jellyfish - Matt Slater)
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