This bright ‘Pink Lake’ is famous not only for its unusual bright pink waters but also because of its high salt content. Microscopic green algae called Dunaliella salina give the lake both its pink color and the nearly 40 percent salt content which allows its swimmers to float easily above the waters, similar to the Dead Sea. The lake’s salt collectors constantly rub themselves with shea butter to protect themselves from skin and tissue damage. Lake Retba’s bright pink color can most vividly be seen during Senegal’s dry season.