What is on my rock?

[Parent_usmc]

just noticed the other day, do not seem to move but are really only in one spot..

Sorry about the quality, they look like white hairs

 

[Crabs McJones]

Looks like fan worm tubes. They're basically calcium tubes that fan worms live in.

 

[Parent_usmc]

Nothing to be nervous of i hope?

 

[Crabs McJones]

Nothing to be nervous of i hope?

nope, tube worms are harmless filter feeders