Spirals on coral

[captain_jimmy]

Hi

These guys grew on one of my hammers. Started with one randomly appearing one day and they have multiplied and gotten bigger.

The coral has seemed unhappy so I smashed the shells with some pliers but wondering what they are in case they come back or appear elsewhere.

Cheers

 

[MONTANTK]

Hmm hard to say but looks like it could be a sponge of some sort

 

[captain_jimmy]

Oh should have mentioned that they are hard hollow tubes so I assume it's some sort of worm or something. Just not sure what

 

[Goaway]

vermetid snails most likely. Wonder if they are dead?

 

[captain_jimmy]

I had some vermitids elsewhwere in the tank but they were tiny compared to these guys. These spiral things are as big as a penny.

They've been getting bigger so I crushed the shells as best I could with pliers then covered them in superglue. Figured I'll leave it for a week or so then pull the glue off and see what's left?