Lake Turkana is situatated in the Great Rift Valley in Kenya. It is the world's largest desert lake and the world's largest alkaline lake. Rocks in the surrounding area are predominantly volcanic. Getty Images
Elephants stand in tall grass in the Garamba National Park in north-eastern Democratic Republic of Congo. AFP
Clouds are reflected in the Florida Everglade. AFP
A male Grauer's gorilla, a critically endangered species, rests in the forest of Kahuzi-Biega National Park in northeastern Democratic Republic of Congo. AFP
Okapi Wildlife Reserve, Democratic Republic of Congo. Alamy
Aerial view of rainforest Leuser Mountain National Park which is one of the national parks listed in UNESCO as a World Heritage Site, the Tropical Rainforest Heritage of Sumatra in Aceh, Indonesia. Getty Images
Aerial view of the Rio Platano biosphere reserve in La Mosquitia region, Honduras. AFP
An aerial view of the Great Barrier Reef off the coast of the Whitsunday Islands, along the central coast of Queensland. AFP
Lake Turkana is situatated in the Great Rift Valley in Kenya. It is the world's largest desert lake and the world's largest alkaline lake. Rocks in the surrounding area are predominantly volcanic. Getty Images
Elephants stand in tall grass in the Garamba National Park in north-eastern Democratic Republic of Congo. AFP
Clouds are reflected in the Florida Everglade. AFP
A male Grauer's gorilla, a critically endangered species, rests in the forest of Kahuzi-Biega National Park in northeastern Democratic Republic of Congo. AFP
Okapi Wildlife Reserve, Democratic Republic of Congo. Alamy
Aerial view of rainforest Leuser Mountain National Park which is one of the national parks listed in UNESCO as a World Heritage Site, the Tropical Rainforest Heritage of Sumatra in Aceh, Indonesia. Getty Images
Aerial view of the Rio Platano biosphere reserve in La Mosquitia region, Honduras. AFP
