Coral pest ID

[Mattg023]

Found these two parasitic crustacean looking creatures on the base of my wall hammer. I plucked them off. Attached some pics. Anybody know what these are?

 

[fishguy242]

hi,look like stomatella snails,hard dome on back? good guys

 

[SHNICI]

I guess stomatella like you @fishguy242, but it's really odd to me that's looking like wasp pupa