Hairy worm things??

[Driller31]

Me and wife have noticed SEVERAL of these hairy worm looking things. What are they?? Also one of them has a body and six legs kinda like a starfish..Does anyone know what these are, and when I feed they all extend themselves from the rocks to grab the grub??

 

[thincat]

Check out this link:Xtalreef

 

[melosu58]

Moved to the SW ID forum.