At work on board of a research vessel of the Bedford Institute of Oceanography, Nova Scotia: shots of scientists, Mr Brooks and Dr Lancarovic gathered around an echo sounder recorder. Shots of men in front of depth sounder, TILT UP piece of equipment and shot of gravitometer and magnetometer. CU of man's hand flicking switch, tape reel turning slowly. MLS of shark swinging in and out of water from fishing line as students line rail to look at it. HAMLS of bow of research vessel, water splashing over it. Interior of wheel house, man at helm, other man operating engine room telegraph. Shot of deck along one side. LAS of main mast, radar scanner turning.