Great white pelican (Pelecanus onocrotalus), Lake Naivasha, Kenya, East Africa, Africa

Great egret (Ardea alba), Lake Jipe, Tsavo West National Park, Kenya, East Africa, Africa

Great white pelican (Eastern white pelican) (Pelecanus onocrotalus), Lake Nakuru National Park, Kenya, East Africa, Africa

Great cormorant (Phalocrocorax carbo), Lake Naivasha, Kenya, East Africa, Africa

Great egret (Ardea alba) in flight, Lake Jipe, Tsavo West National Park, Kenya, East Africa, Africa

A great egret (Egretta alba) on a lake shore, Tsavo, Kenya, East Africa, Africa

Great white pelican (Eastern white pelican) (Pelecanus onocrotalus) in flight, Lake Nakuru National Park, Kenya, East Africa, Africa

Great white pelican (Eastern white pelican (Pelecanus onocrotalus) in flight, Lake Nakuru National Park, Kenya, East Africa, Africa

Lake Malawi, Africa, True Colour Satellite Image. True colour satellite image of Lake Malawi, an African Great Lake situated between Malawi, Mozambique, and Tanzania. Composite image using LANDSAT 5 data.

White pelican (Pelecanus onocrotalus) flying over a group of flamingoes, Lake Nakuru, Kenya, Africa

Aerial view, salt crust coloured red by cyanobacteria, Lake Natron, Great Rift Valley, Tanzania, Africa

Aerial view, salt crust coloured red by cyanobacteria, Lake Natron, Great Rift Valley, Tanzania, Africa