This image shows the Totten Glacier ice shelf in East Antarctica (the wrinkled white area at top left) on September 25, 2013. Two large open-water polynyas appear on the sea ice below and to the right of the shelf, as well as several smaller ones. The open-water areas are bright black. The stippled diagonal line from lower left to upper right is the outer edge of the sea ice, with cloud cover to the right of that line. The image is from the Moderate Resolution Imaging Spectroradiometer instrument on NASA's Aqua satellite.
Photo credit: NASA
Note: For more information, see NASA Finds Reducing Salt Is Bad for Glacial Health.
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