Ok i have no pics. There is a "thing" on my saltwater tank glass. The tank is about 2 weeks old. It is opague, oval shaped. if i tried taking a pic of it, it wouldnt show up on the photo. IT has these 4 patches on it that look like they may be pretruding off the top of this creature..This is a very flat maybe even a worm..must be millimeters in height. its not an amoeba as it multicellular but it doesnt have the shape of a nudibranch. it does move, but it moves slowly...i know its hard to id with this info but can people post pics of what they thing it may be and i can go from there. i would appreciate it