ID Please!

[AydenLincoln]

I noticed this little thing that almost looks like a snail shell on my rock and it hasn’t really moved since I noticed it a few days ago.

 

[Jay Hemdal Verified Community Expert]

Mr. Limpet!
(Don Knotts movie reference).

A harmless algae eater, a mollusk.

Jay

 

[AydenLincoln]

Mr. Limpet!
(Don Knotts movie reference).

A harmless algae eater, a mollusk.

Jay

Thanks! I knew it wasn’t a chiton or stomatella snail which came to mind.

 

[tbrown]

They're good hitchhikers but they exploded in my tank so at night the glass is covered!

 

[JoJosReef]

Limpet! If it came off gulf rock, it might be a super algae eater. I have one hitchhiking limpet that almost single-footedly took out all the nuisance ulva in my tank and even cleaned off the little patch of GHA on a favia frag that I couldn't get manually.