Yesterday I bought a bunch (15-20) of live seawater shrimps and put them into the tank. Although I wasn't up the whole night Maurice didn't really seem to come out. But this afternoon he seemed to look for them. In fact Maurice almost seemed to be scared to be surrounded by so many shrimps. I wanted him to be a little bit more active so I lifted up the rock that he was onto. After very little time he came out and swam into the water. When he saw a shrimp he got so scared that he inked. So I fastly caught his ink with a bucket and put it out of the tank. In addition I put another activated carbon mat into the tank. Isn't it add that an octo gets scarred because of shrimps?