ID please

[rpeters]

Anyone know what these are? they are growing off the rock and are hard like tubes. I have not seen anything come from them but they just randomly show up.

 

[TheEngineer]

Vermetid snail

 

[themcnertney]

Yup

 

[rpeters]

Thanks, thats what i was thinking but alot of the pictures i saw made them look more soft vs hard tube. So it appears they are ok to have just keep them off corals?

 

[Palyzoa]

Yes to Vermitid snail. You can pop it off with tweezers or super glue the opening shut. They put out a mucus web to catch food and can irritate corals. Their population will grow and shrink depending on how much you feed the tank.