Bristleworm???

[UberBanshee]

I just found this guy in my reef tank this morning. I though he was a bristleworm (due to the bristles) but after researching the internet, he doesnt really look like one. Should I remove him or is he okay to stay?

Note: It is about 1" long

 

[venwu225]

its a sea cucumber, leave it alone

 

[Sk8r]

Cuke. Try to find out species: some are poisonous as they die, though I think it's a very neat hitchhiker, and I'd keep him.