Nudibranch or what?

Here are two links to a possible green Nudi. My divemaster, Vincent, was certain it was a nudi but it is kind of wild looking...

Click Here!

Wow Jeremy that is pretty wild! Wondering if it may be the juvenile stage of some Sea Star???

Cheers,

Jim.

It's a type of upside-down jelly. You can see the mouth in the center of the animal. Not Cassiopeae. I've seen similar ones in the Caribbean.

Looks like a member of Stauromedusae, or stalked jellyfish.

Cheers,

Marli

It looks like it found a perfect spot to be camouflaged

Thanks Marli! That was enough memory jog -- stalked jelly Halicystus. Haliclystus auricula is the best known as it occurs throughout the northern hemisphere. There are about 10 species.

http://www.marlin.ac.uk/speciesinformation...?speciesID=3445