Well was on the phone and noticed a black spot, looking closer I thought oh no we have that red slime again, looked closer, nope it's moving, it is black and about the size of a nickel, I've tried the seaslug forum I've tried pics, I'm at a loss. I wanted to get it off, but as I approached it with a stick to get it off the rock it opens a white looking mouth. I don't want to kill it, but I don't want it to destroy any of the reef. I'm hoping someone has seen this before and can ID
it for me.