In typical head-down posture. Fins show double sine wave undulation. Mucous strands (white blobs) attached to posterior end of mantle.

From: Roper, C.F.E. and M. Vecchione. 1997. In situ observations test hypotheses of functional morphology in Mastigoteuthis (Cephalopoda, Oegopsida). Vie et Milieu 47:87-93.

Online abstract: http://invertebrates.si.edu/cephs/rv97/rv97.html
Also: http://invertebrates.si.edu/cephs/v01/v01.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