Simple critter ID please

[NinjaSeaTurtle]

 

[brmreefer]

Feather duster worm without the calcium carbonate tubing. Wait to see if others concur.

 

[\m/reefsnmetal\m/]

Feather duster worm without the calcium carbonate tubing. Wait to see if others concur.

I concur.

 

[Andreas' Reef]

looks like a featherduster worm to me

 

[vetteguy53081]

It’s a peanut worm with its feeding fan which captures food.
Dusters and tube worms will generally not be on glass but rather rocks and structures