Anatomy of finfish and shellfish

Unit 13- Mollusca

13.4. Cephalopoda - Sepia (The Cuttle-fish)
The cephalopods, whose living representatives include cuttle¬fish, squid, octopus, nautilus, etc., are marine molluscs very different from the other molluscs in general. Adapted for a swimming existence, they are the most highly organised of all the molluscs and include the largest species of the invertebrate animals. The head region, as the name implies, is large and well developed. A very common cephalopod is the cuttle-fish.
Systematic Position
Phylum- Moliusca
Class- Cephalopoda
Order- Colcoidea (Dibranchia)
Sub-order- Decapoda
Family - Sepiidae
Genus- Sepia