I just had the coolest experience with my octopus! My wife and I sat and watched as he was entertaining. He would hide and then come out to look at us. Finally he came out on the glass and sat in front of us looking at us. We played with him until I finally scared him away due to the fact that I was literally playing with his arm. Cool why??? He let me. it was bizarre as if he was playing with my finger to see what I felt like as much I was doing the same. I don't think he is dying at all I just think he was waiting for me to figure him out.