ok, to clarify...yes the blue thing is a sponge, the green thing is a small piece of caulerpa, and the big orange thing is what I can't identify. I think it's a flatworm...it has 2 little eyes near one end, it molds and shrinks to fit in any hole/crevice. It is about 3in long by 1.5 in wide in those photos. It's a rusty color orange. It felt slimy and retracted when I touched it. Seems to prefer the dark too. It did seem symmetrical too, but the rock in this photo was kinda bumpy. Everything I read on flatworms seems to lead toward tiny things on the glass that reproduce quickly. Only thing new i added was a piece or LR about 1 month ago. No others have been seen. Thanks to everyone for taking a look :)
