Brown Sea Hare

[SaltyAllergy]

I found this sea hare, abalone or stomatella snail in my tank. Do I do anything about it if it is a sea hare?
Cuz Sea Hares is a expert only creature? I'll try to get a picture of it when I see it again.
It came into the tank through putting a Colt Coral into our tank.
What do I do?

 

[Alexraptor]

Picture would help. But if it arrived on a coral, odds are it's actually some sort of coral-eating nudibranch.

 

[ISpeakForTheSeas]

Pictures are needed for an ID here, but just putting this out there: if it has a shell, it is not a sea hare, nudibranch, or other sea slug. If it does not have a shell, then it is not an abalone, stomatella, or other snail.

 

[SaltyAllergy]

Pictures are needed for an ID here, but just putting this out there: if it has a shell, it is not a sea hare, nudibranch, or other sea slug. If it does not have a shell, then it is not an abalone, stomatella, or other snail.

It’s brown and I think it has a shell, because of barnacles growing on its back.