Sharon Heald / African elephant (Loxodonta africana) herd silhouetted at sunset, Chobe National Park, Botswana.

Sharon Heald / Hippopotamus (Hippopotamus amphibius) charging, Chobe National Park, Botswana, July.

Sharon Heald / Hippopotamus (Hippopotamus amphibius) charging, Chobe National Park, Botswana, July.

Sharon Heald / African buffalo (Syncerus caffer) low angle portrait, Chobe National Park, Botswana.

Andy Rouse / African Lion (Panthera leo) male emerging from bush, Masai Mara, Kenya

Sharon Heald / African elephant (Loxodonta africana) playing in Chobe River, Chobe National Park, Botswana, May.

Sharon Heald / African elephant (Loxodonta africana) play fighting in Chobe River, Chobe National Park, Botswana. May.

Sharon Heald / African elephant (Loxodonta africana) large bull elephant standing next to tourist vehicle, Etosha National Park, Namibia. February 2017.

Sharon Heald / Yellow-billed stork (Mycteria ibis) nesting colony, Chobe River Chobe National Park, Botswana. May.

Sharon Heald / African elephant (Loxodonta africana) close up, Etosha National Park, Namibia.

Sharon Heald / White rhinoceros (Ceratotherium simum) In the rain Kruger National Park, South Africa.

Sharon Heald / Springbok (Antidorcas marsupialis) in heavy rain, Etosha National Park Namibia.

Sharon Heald / Pale chanting goshawk (Melierax canorus) Etosha National Park Namibia.

Sharon Heald / Pale chanting goshawk (Melierax canorus) Etosha National Park Namibia.

Sharon Heald / African elephant (Loxodonta africana) charging through water Etosha National Park, Namibia.

Sharon Heald / African elephant (Loxodonta africana) charging through water Etosha National Park, Namibia.

Sharon Heald / Springbok (Antidorcas marsupialis) wet after heavy rain Etosha National Park, Namibia.

Sharon Heald / African elephant (Loxodonta africana) two playing in Chobe River. Chobe National Park, Botswana.

Sharon Heald / African buffalo (Syncerus caffer) with Yellow-billed oxpecker (Buphagus africanus) grooming, Chobe National Park Botswana.

Sharon Heald / African elephant (Loxodonta africana) two babies follow their mothers, rear view, Chobe National Park, Botswana.

Sharon Heald / Domesticated Asian elephant (Elephas maximas) working with man to harvest reeds, Kaziranga National Park Assam India Mar 2009

Sharon Heald / Hippopotamus (Hippopotamus amphibius) running Chobe National Park, Botswana.

Sharon Heald / African elephant (Loxodonta africana) bull crossing river, Chobe National Park, Botswana. July.

Sharon Heald / African elephant (Loxodonta africana) bulls playing in river Chobe National Park, Botswana,

Sharon Heald / African elephant (Loxodonta africana) feeding on river plants, Chobe National Park, Botswana.

Tony Heald / Yellow-billed stork (Mycteria ibis) in flight, Chobe National Park Botswana.

Sharon Heald / Giant kingfisher (Ceryle maxima) male eating a small crab, Chobe National Park, Botswana.

Sharon Heald / Long-toed plover (Vanellus crassirostris) Chobe National Park, Botswana.

Tony Heald / Yellow-billed stork (Mycteria ibis) preening, Chobe National Park, Botswana.

Sharon Heald / White-backed vulture (Gyps africanus) in flight, Etosha National Park, Namibia.

Sharon Heald / Bateleur eagle (Terathopius ecaudatus) male drinking, Etosha National Park, Namibia.

Sharon Heald / RF- African elephants (Loxodonta africana) drinking at sunset. Etosha National Park, Namibia. (This image may be licensed either as rights managed or royalty free.)

Sharon Heald / Leopard (Panthera pardus) drinking, Etosha National Park, Namibia.

Sharon Heald / Kudu (Tragelaphus strepsiceros) herd drinking with Giraffes (Giraffa camelopardalis) and Namaqua Sandgrouse (Pterocles namaqua) and Burchell's Sandgrouse (Pterocles burchelli) Etosha National Park, Na...

Merryn Thomas / Scaffolding to repair planking on Replica of John Cabot's caravel "The Matthew", undergoing maintenance at Underfall Yard in Bristol's Floating Harbour, UK. April 2009.

Merryn Thomas / Replica of John Cabot's caravel "The Matthew", undergoing maintenance at Underfall Yard in Bristol's Floating Harbour, UK. April 2009.

Sharon Heald / Reticulated giraffe {Giraffa cameloparalis reticulata} with young suckling, Laikipia, Kenya.

Sharon Heald / Samburu woman with bead necklaces, Laikipia, Kenya.

Sharon Heald / African masked weaver {Ploceus velatus} male, Etosha NP, Namibia

Sharon Heald / European bee-eater {Merops apiaster} stretching wings with insect prey in beak, Etosha NP, Namibia

Sharon Heald / European bee-eater {Merops apiaster} stretching wings, Etosha NP, Namibia

Sharon Heald / Indian elephant {Elephas maximus} with Mahout, used for carrying tourists to view Tigers, Bandhavgarh NP, India.

Sharon Heald / Baby Indian elephant {Elephas maximus} captive, will be trained to carry tourists for viewing Tigers. Bandhavgarh NP, India.

Sharon Heald / Black backed jackal mother biting young {Canis mesomelas} Etosha NP, Namibia

Sharon Heald / Blue / Stanley crane tossing twig {Anthropoides paradisea} Etosha NP, Namibia

Sharon Heald / Blue / Stanley crane feeding {Anthropoides paradisea} Etosha NP, Namibia