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Images: Diving for Data

An ocean glider has no propeller and moves up and down in the water by changing its buoyancy. A glider cannot receive or transmit data under water. It has to surface to get a GPS reading on its position and to exchange data with scientists back on shore. (Eric S. Taylor, WHOI Graphic Services)
Gliders are often deployed into and recovered from the ocean after dark to allow time for other ship operations that require daylight. (Al Plueddemann, WHOI)
Senior Engineering Assistant Tina Haskins and engineer Jared Schwartz work on a glider in the Laboratory for Ocean Sensors and Observing Systems at WHOI. Behind them is a tank used for “ballasting” gliders to ensure their buoyancy in the ocean. (Tom Kleindinst, WHOI)
Woods Hole Oceanographic Institution is the world's leading non-profit oceanographic research organization. Our mission is to explore and understand the ocean and to educate scientists, students, decision-makers, and the public.
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