Green Phytoplankton and Islands in the Banc d’Arguin, Mauritania19.3N 16.2W
The bright green waters of the Bay of Arguin, or Banc d’Arguin, Mauritania, are caused by the phytoplankton which thrive in its nutrient-rich offshore waters. The bay is mostly shallow and contains many tidal flats.
An island is visible in the lower sections of the bay. This is Tidra, the largest island in the Banc d’Arguin at 18 miles long and 5 miles wide. The island is part of the Banc d’Arguin National Park. Another smaller island, Kiji, can be seen just off Tidra’s western shores.