The Permanent Maghreb ecoregion covers an area of 950,180 square kilometers, and extends across the portions of Algeria, Mauritania, Morocco, Tunisia, and Western Sahara. It occupies the Mediterranean Climate region of northern Africa, and is characterized by rivers and streams ,which flow on the surface year-round. The ecoregion is bounded on the north by the Atlantic Ocean and Mediterranean Sea, and to the south, by the Temporary Maghreb freshwater ecoregion, which covers the northern portion of the Sahara and is characterized by temporary or seasonally-flowing rivers and streams.[1] The major habitat types of the ecoregion are the Mediterranean systems and the Temperate coastal rivers.[2]