Cuttlefish are marine animals of the order Sepiida belonging to the Cephalopoda class. Despite their name, cuttlefish are not fish but molluscs. Cuttlefish have an internal shell (cuttlebone), large W-shaped pupils, and eight arms and two tentacles furnished with denticulated suckers, with which they secure their prey.
GalleriesSquid, Octopus, and Nautilus
Winchell, Alexander Sketches of Creation (New York, NY: Harper & Brothers, 1870)