Architeuthis dux: Giant Squid - Research project by Jordan Mandli on this species, including its classification, general description, adaptations to its deepwater environment, habitat, nutrition and the legends that surround it..
Cephalopod - Information from Wikipedia on this class of marine molluscs which includes the squid, cuttlefish and octopus..
Cephalopod International Advisory Council - Supports and encourages cephalopod research and communication among cephalopod researchers by means of meetings, workshops, and a newsletter..
The Cephalopod Page - Personal site of Dr. James B. Wood devoted to the cephalopods with extensive galleries and articles..
Cephalopoda - Classification and images of cephalopods from the Tree of Life project..
CephBase - Database on cephalopods (octopus, squid, cuttlefish and nautilus), including images, taxonomy, life history, and researchers..
Coleoidea - Photographs and information on octopods, squids, cuttlefishes and their relatives from the Tree of Life Web Project..
Lolliguncula brevis: Brief Squid - Information from the Invertebrate Anatomy OnLine about this mollusc, its systematics, external anatomy and internal anatomy..
Nautilus pompilius: Nautiluses - Photographs and information on Nautilus and Allonautilus which are the last living genera of externally shelled cephalopods..
Octopus vulgaris - Tom Akkala provides photographs of the common octopus and information on its classification, habitat, adaptation, nutrition, reproduction and interaction with other species..
Octopus.com - Information on the family Octopoda, including locomotion, anatomy, species and cephalopod literature..
Sepia officinalis - Factsheet from the FAO on the Common Cuttlefish, its distinguishing features, distribution, habitat and biology..
Sepioteuthis sepioidea: Caribbean Reef Squid - Photographs and information on these squid that are often confused with cuttlefish because their large fins wrap around their mantles..