liverock growth ID

[billm]

while moving my liverock around I found something growing on the side and bottom. does anyone know what this is? the stems are brittle. anyhelp is appreciated. Thanks Bills wife

 

[L8 2 RISE]

some sort of tube worm probably, most likely feather dusters. They build little tunnels for themselves, somewhat similar to what coral does, and then live inside of these tubes and filter feed with a little feather like apparatus.

[Coral Hind]

I too think they are some sort of harmless tube worm.

[billm]

Thanks I just worry they will take over like a weed or aiptasia sorry for all the dup post's