Some sort of worm

Originally Posted by UnlimitedRepo
(Post 228092)

Have a salt water tank and a rock that we purchaed. They stated at the store that the rock has been a their tank for 5 years. There are all types of things growning in and around it. In the attached picture there is white that is growning around the rock and well as an creature with legs coming out of all ends. Can anyone identify them for me. New at salt water