Help Id a worm,safe or not?

[fairylady]

I just noticed a black and white striped worm(I think),almost looks like a tiny eel,except that it has a mouth that moves in and out of it's self,when the mouth opens all the way looks like a feather duster head,but the body is like a worm or snake.It's about 2 inches sticking out at feeding time,but sure it's longer if it were pulled out of the rock)was not scared of any movement of our other creatures in the tank.Can anyone tell me what it is?Does anyone know if it is safe for my reef?
Thanks, Kay

 

[thomas712]

peanut worm

 

[michael7979]

I have a couple, they are harmless.

 

[barry cuda]

I had one...sure wish it'd survived the cycle. Anyone know if you can purchase these? AFAIK they permanently "host" in holes in the rock.

 

[wakeskater]

AS HARMLESS AS THEY MAY BE I DONT KNOW THAT I WOULD WANT THAT THING SWIMMING AROUND IN MY ROCK BUT THAT JUST MY THOUGH

 

[fairylady]

Thanks so much for all quick responses,I was worried I might lose something to this worm.You guys are great!