Whatz Dis?

[Numi13]

Can anyone tell me what this is? I found it under a piece of liverock from an established tank. The stem next to it is from Grape Caulerpa.

 

[arnaldolex]

maybe a sponge

 

[Numi13]

Its smooth and jelly like.

 

[rookie07]

Looks like an elephant slug to me. They are good, eat algae. It moves, right? Does it sometimes show white from the middle of it's "back"?

 

[Numi13]

Haven't seen i move. Never saw it in the tank. Are they nocturnal? Its in my refugium now.

 

[Numi13]

Sure looks like that's what it is though.

 

[ben1020]

looks like a tunicate