What are these they growing all over

[odj22sailor]

Please help! Should I be concerned?
Does anything eat these?
Do I need to remove them?

 

[Diana A]

Looks like Vermetid...I am on my phone. If it is vermeil, I would remove them it sends out a web to catch food. The web irritates coral

 

[MMacro]

Vermetid snails. Relatively harmless. I would try to remove them because they would drive me crazy.

 

[whosurcaddie]

If your going to remove them get at the base with a pair of tweezers or you wont really achieve anything.

They will self regulate based on the amount of nutrients in the water though.

 

[FamilyTank]

Are they hard?

 

[mcgyvr]

Looks like a Vermetid from here too..

Sometimes they are fine/harmless and sometimes corals can really be irritated from the web as states above..

Nothing crushing the heck out of them with some pliers down at the base won't take care of..