In typical tuning fork posture with tentacles greatly elongate as animal suddenly drifts over steep drop-off of sea floor. 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 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 [taxonomy:binomial=Mastigoteuthis magna]
