What are these worm things living in my live rock?

[allshan753]

Keep seeing these small thin snake like worms on one peice of live rock. I am new to the hobby and have a 10g tank with 3 blue leg marine hermit crabs and 2 clown fish. I have seen 3 of these creatures they seem to slither. I only see them at feeding around 8pm. I've search online and gone to my local aquarium store but everyone is stumped. You gotta watch the video to see how it moves.

 

[kevgib67]

@ISpeakForTheSeas was tagged,

 

[ISpeakForTheSeas]

Keep seeing these small thin snake like worms on one peice of live rock. I am new to the hobby and have a 10g tank with 3 blue leg marine hermit crabs and 2 clown fish. I have seen 3 of these creatures they seem to slither. I only see them at feeding around 8pm. I've search online and gone to my local aquarium store but everyone is stumped. You gotta watch the video to see how it moves.

Those are peanut worms (Sipunculans) - they're harmless/beneficial; they're basically part of the clean up crew.

 

[EeyoreIsMySpiritAnimal]

Can't see the video.

 

[EeyoreIsMySpiritAnimal]

Those are peanut worms (Sipunculans) - they're harmless/beneficial; they're basically part of the clean up crew.

I was going to say the Pic looked like a peanut worm but then doubted myself...

 

[ISpeakForTheSeas]

I was going to say the Pic looked like a peanut worm but then doubted myself...

Haha, that happens to me all the time - I usually just take a break for a while and come back to it later so I can look with fresh eyes so to speak.

 

[allshan753]

Those are peanut worms (Sipunculans) - they're harmless/beneficial; they're basically part of the clean up crew.

Thank you!