sea hare/slug

[wayner]

I bought an above this week-end, for a few patches of hair/other algae, I came home tonight to find this mini ball of string stuck to the side of a rock, not knowing too much about sea hares I figured he melted or something, then I see him crawling on a rock in the back with what looks like, I could be wrong, a new coat?, do these things shed?, this is my first expierence with one, I heard when there bothered or stresed they might shoot ink, which could be toxic, but this is not ink, water is fine, it just looks like noodles stuck to the rock, and quite a few noodles.

Don't tell me this is a dump, cause if it is, he's gone.