Hairs on Hammers

[dnprall]

Does anyone know what these hairs on this hammer? I see the same things on one of my ninja start snails as well.

They seem only go after torches and hammers.

 

[cdemoss01]

Does anyone know what these hairs on this hammer? I see the same things on one of my ninja start snails as well.

They seem only go after torches and hammers.

maybe an algae or something having to do with the corals internals.