Mysterious blue waters emerge off Alaska"s coast • Earth.com

Last update: December 14th, 2018 at 5:00 pm

Today’s Image of the Day from NASA Earth Observatory shows a mysterious chalky blue color in the waters near Prince of Wales Island.

Warmer water temperatures off the coast of Alaska and British Columbia may have facilitated a phytoplankton bloom later in the year than usual.

Scientists believe that the milky blue shade is likely caused by a bloom of non-toxic phytoplankton called coccolithophores, which contain limestone that could be responsible for the discoloration.

The image was acquired by the European Space Agency’s Sentinel-2 on July 20, 2018.

By Chrissy Sexton, Earth.com Staff Writer

Image Credit: NASA Earth Observatory

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