What are these ?

[Tham121988]

There are tons of them. In the sand and on rocks and only some seem to build tubes out of the sand and some are just coming through holes. Always 2 tentacles extending from the same location. Here’s a pic.

 

[Knix10]

Spinoid worm

 

[35ppt]

Spinoid worm

+1 harmless

 

[Tham121988]

Thanks y’all!