Day before yesterday I saw what I thought was a bad flatworm way back into the rocks where the light dont shine. This thing was a little bigger than a quarter. It moved away pretty quick. Last night I knew right where to look and I was determined to get that sucker. I found him! I tried sucking him out with a turkey baster, but in the process I killed it. Turned out it was an Elephant Slug, which I read was harmless to a reef tank. My starfish quickly moved in and devoured him...oh well. Picture isnt that great, but this was before its death. Its the black thing with the white keyhold shaped marking on its back towards the top.