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Vecchione, Michael and Clyde F.E. Roper

Cephalopods observed from submersibles in the western North Atlantic.
Bulletin of Marine Science, 49(1-2):433-445.

ABSTRACT: Records of 158 observations of cephalopods from submersibles, primarily the JOHNSON SEA-LINK, have been compiled through collaboration with several investigators. These observations include 118 videotape sequences, 58 collected specimens, and numerous shipboard photographs of live animals. At least 33 species have been observed to date; a few species have been observed repeatedly and could be good subjects for directed studies. The methods developed for in situ observation and subsequent collection of specimens with little or no damage allow descriptions of behavior, morphology, physiology, and distribution that are not possible with other methods of collecting.

Teuthowenia megalops Teuthowenia megalops
in the "cockatoo" posture. The animal rotates (head up, horizontal, or head down) with the spindle-shaped digestive gland as the fulcrum. The digestive gland is kept vertical regardless of the orientation of the mantle and head. JOHNSON SEA-LINK (JSL) I dive 2141; 4 August 1987; New England; depth = 789 m; temp. = 4.8 oC; specimen collected (USNM 816889); DML = 137 mm.
AVI video (1,379 Kb)
MPEG video (1,021 Kb)
Ornithoteuthis antillarum Ornithoteuthis antillarum
in a modified "J" posture, feeding on a Gonostoma elongata (fish identified by J. Craddock, Woods Hole Oceanographic Insitution). In the "J" posture, the arms and tentacles are curled above the head, slightly splayed. JSL II dive 1000; 1 November 1984; Bahamas; depth = 684 m; temp. = 10.7 oC.
AVI video (1,634 Kb)
MPEG video (748 Kb)
Taonius pavo Taonius pavo
in the cockatoo position. JSL II dive 1685; 10 October 1988; Bahamas; depth = 853 m; temp = 8.8 oC; specimen collected (USNM 81712); DML = 140 mm. The video clip shows the individual inking from the cockatoo posture and escaping.
AVI video (1,374 Kb)
MPEG video (819 Kb)
Opisthoteuthis agassizii 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).
AVI video (1,781 Kb)
MPEG video (665 Kb)

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