What are these yellow things that look like aliens?

[Risky Fishniss]

This is a friend of mine's tank......what are the yellow tubular looking things?

 

[Anemone_Fanatic]

Those look to be tunicates. Harmless filter feeders that usually don't live long in our tanks. I hope this helps!

 

[Risky Fishniss]

Those look to be tunicates. Harmless filter feeders that usually don't live long in our tanks. I hope this helps!

It does, thank you.