Tunicates or Sponges

[Protodad]

Looking for an ID. Breaking down an old tank and it had a bunch of these on the rocks and in the overflow. White spongy body and a thin clear tube coming out.

 

[Soren]

That looks like pineapple sponges and spirorbid worms.

 

[Protodad]

That looks like pineapple sponges and spirorbid worms.

I thought pineapple sponges were more fuzzy looking. Here’s a shot of another

 

[Soren]

I thought pineapple sponges were more fuzzy looking. Here’s a shot of another

They do look more like tunicates after looking again. This second picture seems to show the typical ports or vent holes that tunicates have. I am certainly not qualified to identify for sure.