I have this velvety coating on one of my rocks that doesn't ever seem to do much, except today I noticed some clear stuff peeling off of it (which the tomato clown was picking at). It looks very much like the thin transparent membrane on an onion. The photo came out bad but I tried to point out the color difference between the slimed vs no slime.
Does anyone know a. What this velvet stuff is, and b. is it bad or good to be 'shedding'?
Also I have always wondered what that thing is on the top. We call it "the p-enis thing"
In the photo is is bending away from the light. At night it is straight up. It is not a polyp, it is just this weird smooth thing that can contract, extend, bend and harden um... just like.... well, you know.
UPDATE: Early this morning I caught the p-enis thing opened up almost like a button polyp! It is definitely not a button, though. We have had it for 6 months and I never saw it 'blooming' like this before, probably cuz it only does it at night. During the day it bends and sorta lays flat against the rock (as opposed to straight up as you see in my new photo). I think it hates the light. It doesn't look like any of the sea squirt photos I could find... any new ideas?