Assuming filter feeder but what kind?

[zyrzyxen]

Was feeding my corals and noticed these two antenna things grabbing at the water like little hands or claws. Can anyone ID these? Do I need to remove them?

 

[IKD]

Looks like a harmless filter feeder. If it’s actively waving, twisting, retracting/expanding, it could be a crab hiding in the rock. Otherwise, it’s likely a type of feather duster worm or sea cucumber