Cepalopod beak guidebook

The British Antarctic Survey has put the entire Cephalopod Beak Guide for the Southern Ocean online, downloadable free (one entry, more mysterious than most, is reproduced below). The official description:

This is an up-to-date guide to identify the squid and octopods beaks, including 3-D computer images, making this book a extremely useful tool to marine ecologists dealing with trophic interactions in the Southern Ocean.