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Oceanographers collect and study data about the motions of ocean water (waves, currents, and tides), marine life (sea plants and animals), ore and petroleum deposits (minerals and oils contained in the nodules and oozes of the ocean floor), and the contour of the ocean floor (ocean mountains, valleys, and depths). Many of their findings are compiled for maps, charts, graphs, and special reports and manuals Oceanographers may spend some of their time on the water each year gathering data and making observations. People who infrequently go to sea do additional oceanographic work on dry land. Experiments using models or captive organisms may be conducted in the seaside laboratory Oceanographers use equipment designed and manufactured in special shops. This equipment includes devices to measure depths by sound impulses, special thermometers to measure water temperatures, special cameras for underwater photography, and diving gear and machines like the bathyscaphe (a submersible ship for deep-sea exploration). In addition to such commonly used equipment, many new devices have been developed for specific types of underwater work. The oceanographer of the future may be using such tools as a hydraulic miner (a dredge to extract nodules from the ocean floor), an electronic beater (a machine used to drive fish), dye curtains, fish pumps, and instrument buoys. New technologies being developed today include satellite sensors and acoustic current-measuring devices.