ID help

[gasguzzler]

I was told to post here from everyone else. I already have this opened on 2 other forums. Anyway, there is this live rock hitch hiker in the picture. Everyone I ask doesnt know what it is. There are no negative effects that go with it, Im just curious.

 

[bot587]

i think it may be a slug... lol if thats of any help, however its hard to say.

 

[bang guy]

Looks like some oddball species of Peanut Worm.
What does it do when you spook it?

 

[gasguzzler]

It retracts rather quickly into its hole again.

 

[bang guy]

Does it kinda roll up from top to bottom like a sock?