Is this guy good news or bad news?

[RedSeareefkeeper]

Found this guy on my rock today,
What kind of limpet or whatever is it and will it my eat coral?

 

[Cell]

Looks like a limpet and they are reef safe.

 

[Katrina71]

Yep good guy

 

[KrisReef]

They can be very bad if they fowl an impeller but I don’t think I have heard of that happening before. They don’t seem to cause any problems and may provide food for a wrasse, so generally they are ok.

 

[Daniel@R2R]

Good!