Swimming worm..possible ID?

[ReeferGreg]

I just found a millipede-like worm, about 1/2" long, swimming in the water column. It wasn't a fantastic swimmer, but it was jetting around somewhat frantically. I scooped it out with a paper cup. Before I caught it in the water column, I noticed it sort of hanging out near some cyano. I'm not sure if it was eating it.

It is slightly orangish, and gets darker towards the head. It has a head that looks kind of millipede-like. Its body is sided with numerous small swimming legs.

When it remains still enough, its internals are somewhat visible through its slightly transparent body.

Any ideas?

Safe to re-release?

 

[spoiledcats]

Aside from the swimming part, it sounds alot like a bristleworm. I've never seen one of them swim.

 

[Paintbug]

chances are its an Epitoke, which is how some bristle worms breed. take a look here about 1/2-3/4 down.
http://home2.pacific.net.ph/~sweetyummy42/hitchworms.html

 

[Salamander]

Sounds like an Oenone to me. Not sure if they swim but that's what came to mind from your description. IMO bristle worms dont look like millipedes, but these do.

 

[Salamander]

"What we usualy mistake as another worm species can very well be a modified version of a bottom dwelling worm specialized to swim in the water for reproduction."

Crazy....