Sponge or other on snail?

[Chris Spaulding]

Are these a pineapple sponge of some sort or something g different? Should they be removed or harmless?

 

[twentyleagues]

Yes I believe they are pineapple sponges. That is one of the craziest things I have seen also.

 

[Chris Spaulding]

I just want to make sure they are not some kind of evasive hydroid

 

[twentyleagues]

I just want to make sure they are not some kind of evasive hydroid

Seeing something like that I would too. 99% its pineapple sponge.