Opisthoteuthis agassizii on the bottom. In the video clip, the animal leaves the bottom and swims away, beating its fins and using the arms and web for medusoid swimming. JSL II dive 1746; 25 April 1989; St. Vincent I.; depth = 586 m; temp. = 6.6 oC; specimen collected (HBOM 068:00086).
From: Vecchione, M and C.F.E. Roper. 1992. Cephalopods observed from submersibles in the western North Atlantic. Bulletin of Marine Science, 49(1-2):433-445.
Online abstract: http://invertebrates.si.edu/cephs/vr91/cephs4.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: Smithsonian's National Museum of Natural History