So my new octo Severus is a briareus(i think) and besides a few hours the first night, he always seems to wanto sleep on top of the rocks, out in the open. I just find this weird because i'm seeing from most ppl that there octo's will den up for days upon entering the tank, wont eat and such annd will sleep hidden away from everyone during the day. Severus ate well the 2nd day, and today being his 3rd he's again sleeping out in the open, on top of a rock at the darker side of the tank(or sometimes in a blck coffee mug i put in, but it faces the light right at the front of the tank, he doesnt seem to mind this either. He has plenty of pvc piping, but he hangs out in there more when hes awake and having a shy moment. Is this normal, and healthy behavior?