u/johnpondee

Intertidal zone under a dock around a lot of nudibranch and sea stars etc… At first thought it was a bunch of little worms but realized it was a single organism with a body under the pink wormy parts. Any help with ID would be much appreciated. Maybe a type of nudibranch I’m not familiar with?

Also curious if anyone can ID the very last pic- at first I thought it as a bunch of worms but it moved together and had some sort of body under the little pink wormy parts