Do Jellyfish Have Eyes?

After watching Finding Nemo I got interested a little in jellyfish. I've noticed they doesn't seem to have eyes at all.
But it's hard to tell because they're such complex creatures.
Do jellyfish have eyes or something similar that allow them to see in the ocean?

asked by Roxanne in Dogs | 6223 views | 07-20-2009 at 02:24 PM

Well according to Wikipedia "Some jellyfish also have ocelli: light-sensitive organs that do not form images but which can detect light, and are used to determine up from down, responding to sunlight shining on the water's surface."

So they apparently have these eye structure that react to light but can't form images.

However a recent discovery found this type of jellyfish:



They look really strange. These type of jellyfish are called venomous box jellyfish.

Unlike normal jellyfish, which drift in the ocean current, box jellyfish are active swimmers that can rapidly make 180-degree turns and deftly dart between objects. Scientists suspect that box jellyfish are such agile because one set of their 24 eyes detects objects that get in their way.

answered by Bill | 07-20-2009 at 02:29 PM

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