Orange thing I thought was a sponge...

I still don't know what he is...he doesn't really look like any of the cucumber pictures, and he doesn't a sea hare move around a bit?

I moved the rock about an hour ago he bumped the side of the tank a little and now isn't moving at all--I hope he's just staying still because he got moved in front of the powerhead. Maybe I should stop rearranging his rock. We'll see what happens with him. Whatever he is.

 

I just looked since I've moved it, and he's on a rock with 2 huge clams or some kind of bivalve. I noticed one yesterday, but just now I noticed the one that the orange guy seems attached to (it opened and moved around and the orange guy moved with it.) Here are some more pictures from different angles.

 

It's not a sea hare. It looks to be a sea cucumber of some kind, as the others suggested. It will be one of the filter feeders rather than the sand sifting sort, and it does look to be in the same family as the Sea Apples. Holothurians are out of my league, so I can't give you a species name on it. It's pretty, in any case (which may mean it's toxic if it dies, of course LOL). Cheers,



Don

 

Do you think he could be a giant tunicate? I was going though florida hitchhikers and found this and it kind of looks like him, but my guy has a smaller mouth.

 

Well, not to doubt the Florida hitchhikers site, but that last pic looks like the mantle of a Spondylus, or Spiny Oyster. I may be just looking at it wrong, though.

 

Pretty sure he's just some sort of solitary tunicate. Any idea how to care for him?