The crew of the Ocean Hunter III baited these with chicken, and then brought them up from the abyss (> 200 m) to diveable depths. The nautili clearly wanted to descend again, and we had a few minutes with each of them to take photographs.
Nautilus are ancient cephalopods, primitive relatives of squid and octopi.
By Pacificklaus Photography, 2009.
Enjoy more of my photography in "Sex, Drugs and Scuba Diving".