What is this?

[dfleary]

The picture attached is from the home page of AquaCave (www.aquacave.com). I'm very new to reef keeping (I've always done FOWLR before), so I'm not sure what that blue/purple animal is - could someone identify it for me? I think it is gorgeous.

Thanks!

 

[cloak]

It's a tunicate of some sort I believe.

http://www.reefkeeping.com/issues/2005-03/rs/index.php

 

[SantaMonica]

Yep tunicate. Would love to find one like that for sale. The are all non-photosynthetic, I believe.