What is this thin worm?

[TehBrainz]

Sorry for the poor pictures, I was trying to focus while my golden thought it was pets time . The worm is thin and pinkish with almost white legs that are definitely not "bristles". It was moving its thin legs like a centipede or millipede and was extremely fast at retreating back into the rock when a fish came by.

 

[tbrown]

Looks like a bristleworm most likely.

 

[monkeyCmonkeyDo]

Alien! Or predator. Lol.... idk
D

 

[TehBrainz]

Looks like a bristleworm most likely.

It's definitely not a bristle worm, at least not the common ones you typically see. The "legs" are individual and not grouped together in the bristle shape and the overall movement was totally different. Hard to describe but it moved like it had purpose and not blindly bumbling for food...if that makes sense

 

[JGT]

Dorvilleidae.