A Pacific doratopsis, Chiroteuthis calyx Young. Inks, then swims tail-down.

From: Vecchione, Michael, Bruce H. Robison, and Clyde F.E. Roper. 1992. A tale of two species: tail morphology in paralarval Chiroteuthis (Cephalopoda: Chiroteuthidae). Proceeding of the Biological Society of Washington 105(4): 683-692.

Online abstract: http://invertebrates.si.edu/cephs/vrr92/cephs5.html

To see other cephalopod videos: http://collections.si.edu/search/results.htm?fq=online_media_type%3A%22Video+recordings%22&q=&fq=tax_class:%22Cephalopoda%22



Author: smithsonianNMNH
Source: YouTube