Id not sure if harmful plz

[rojhonelle]

Hi found this little crabby with something on him, it appears to be a sponge not sure....

 

[4FordFamily]

Interesting, as that does look like a whote sponge.

@Lionfish Lair what say you?

 

[Fish Werx]

Looks like an Emerald crab to me. Prob a sponge on his side like you said. Not harmful, actually helpful in keeping algae at bay especially bubble algae!

 

[stevo01]

+1 on Sponge or maybe barnacle.

 

[Lionfish Lair]

Definitely a pineapple sponge. Is that a hole I'm pointing to?

 

[rojhonelle]

Definitely a pineapple sponge. Is that a hole I'm pointing to?

We have to check

 

[rojhonelle]

Definitely a pineapple sponge. Is that a hole I'm pointing to?

@Dtfnemo

 

[Dtfnemo]

What does the whole on it means?

 

[Lionfish Lair]

I was just wondering if that's what it was.