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Algal blooms in the Bering Strait, satellite image. North is at top. This footage starts with a view mostly showing Alaska and zooms in on the Bering Strait. At the end of the clip, the coast of Alaska is at right, with part of the coast of Russia's Chukchi Peninsula at left. The Bering Strait is 85 kilometres wide. To its north is the Chukchi Sea, and to its south is the Bering Sea. The water colours include algal blooms and river sediments. Image data obtained in 2010 by the Moderate-resolution Imaging Spectroradiometer (MODIS) instrument on NASA's Aqua satellite, part of the Earth Observing System (EOS)