Vincent Grafhorst / Stalagmites and stalactites in cave chamber, Gcwihaba Caves, Botswana

Vincent Grafhorst / Hippopotamus (Hippopotamus amphibius) juvenile at surface, Khwai River, Botswana

Vincent Grafhorst / Thunder storm with lightning bolts at sunset over Kalahari, Khutse Game Reserve, Botswana

Vincent Grafhorst / Sunset over plains, Khutse Game Reserve, Botswana

Vincent Grafhorst / Double rainbow over Kalahari, Kgalagadi Transfrontier Park, Botswana

Richard Du Toit / Burchell's Zebra (Equus burchellii) and Carmine Bee-eater (Merops nubicus) as passenger, Savuti, Chobe National Park, Botswana

Richard Du Toit / Burchell's Zebra (Equus burchellii) mother and foal, summer, Savuti, Chobe National Park, Botswana

Richard Du Toit / Southern Giraffe (Giraffa giraffa) and Burchell's Zebra (Equus burchellii) at water hole, Khwai River, Botswana

Mitsuaki Iwago / Burchell's Zebra (Equus burchellii) mother and foal, Botswana

Gerry Ellis / Sunset and storm clouds over waterhole, Kwando River flood plain, Linyanti Swamp, Okavango Delta, Botswana

Mitsuaki Iwago / Burchell's Zebra (Equus burchellii) foal portrait, Botswana

Mitsuaki Iwago / Burchell's Zebra (Equus burchellii) portrait, Botswana