Looks about dead. The mantle is mostly inside and shriveled up inside. The intake hole is huge and sucked deep down inside shell. This sucks!!! No idea how this happened. Only difference I have in my tank is I'm letting algea grow on back glass. I made a thread for that. I asked how to do people clean the back glass and answers were not to so it turns into coraline. Ugh having clams is the best. I hate this. Now right next to it is my Derasa clam which is very healthy and looks good. Should I remove the maxima? When I put my hand near it it barely moved. But it did move a tad. Clearly in trouble. Hard to get clear pics with my iPhone. Ugh any ideas?