Can you ID this Coral???

[Coral.Reef]

Spotted this little guy growing in one corner of my tank. Any idea what this is? Almost the size of a dime when open.

 

[Sean Clark]

Nothing to see, no pic attached.

 

[Coral.Reef]

Nothing to see, no pic attached.

Updated

 

[Sean Clark]

Looks like a florida ricordea mushroom

 

[James M]

Looks like a ball anemone, they are harmless

 

[Coral.Reef]

Looks like a ball anemone, they are harmless

Indeed it does…never seen one in 4 years until one popped up suddenly…guess I’ll let them be?

 

[tbrown]

Indeed it does…never seen one in 4 years until one popped up suddenly…guess I’ll let them be?

Up to you. They're neat little anemones but they can populate pretty quickly. In my old tank, they tended for the sump and dark overhangs.