Attributes / relations provided by ♦1CephBase - Cephalopod (Octopus, Squid, Cuttlefish and Nautilus) Database ♦2Niche Partitioning, Distribution And Competition In North Atlantic Beaked Whales, Colin D. MacLeod, A thesis submitted to the School of Biological Sciences for a degree of Doctor of Philosophy at the University of Aberdeen, Aberdeen, UK. January 2005