Sponge or something else?

[acshaw80]

This might be a long shot but anyone know what these growths are on the underside of my rock with star polyps? Came as a hitchhiker a few months back. Thought it maybe was a sponge but wasn’t sure about the tube like appendages sticking out. They are a light greenish yellow color.

 

[Cory]

Its definitely a darkness type creature. Hard to tell what it is. Can you get a closer pic?

 

[acshaw80]

Here’s another pic. This is as good as I can get with the zoom on my phone.

 

[Cory]

Looks like some.sort of tunicate

 

[acshaw80]

Googled “yellow sponge”

this looks about right

Yellow Sponge | Melev's Reef

Quite a bit of sponge growth in our tank is unplanned, coming in as a hitchhiker on the rockwork. If you have some, take some time to enjoy its design, its texture. Remember that sponge will not survive out of water, so if you remove the rock from your tank for any time at all, it will die and...

www.melevsreef.com

 

[vetteguy53081]

Its sponge with tunicate