Hello, I'm new here & I just bought a new octopus. I only got him home a couple hours ago and I want to make sure his first day here is as stress-free as possible. He's a bimac about 2 inches in diameter. Any advice? All he's done since I got him home is hide under a shell, which seems like pretty normal behavior but there's a yummy crab nearby that he hasn't even attacked yet so I hope he's ok.