Friend or Foe?

[Zero 0]

I'm new here and have always appreciated the information here. However I can't find any information on these little guys. Should I remove or observe them?

 

[IKD]

Look like sponges. Most likely harmless

 

[Steven Garland]

Looks to be a sponge. A good filter feeding part of the CUC.

 

[ISpeakForTheSeas]

I would guess tunicates myself (since it looks like a smooth skin on the organisms and I only see two large holes on each), but either way - sponge or tunicate - they’re harmless/beneficial filter feeders. I’d keep them.