Is this anything

[Raideress]

Hi I'm wondering if anyone can tell me what this is in my sand, it's not sitting on the surface for poking up from under when I put the power head down to clean away the detritis that stuff stays put has a similar look to zombie snails but I'm pretty sure they don't tend to breed and produce in tanks often, so don't think so, besides it does seem to move

 

[EeyoreIsMySpiritAnimal]

Those are Phyllochaetopterus.
Read more about them here

https://reefkeeping.com/issues/2003-05/rs/index.htm

 

[Raideress]

Those are Phyllochaetopterus.
Read more about them here

https://reefkeeping.com/issues/2003-05/rs/index.htm

Ahhh thanks so similar to feather duster worms, but no feathery fun, I had some feather dusters once would love more