Denis-Huot / Portrait of male Waterbuck (Kobus ellipsiprymnus) in the rain, Masai-Mara game reserve, Kenya.

Richard Du Toit / Waterbuck (Kobus ellipsiprymnus) head portrait, Limpopo Province, Pafuri, South Africa

Georgette Douwma / Yellowbar angelfish (Pomacanthus maculosus) swimming over coral reef with soft corals. Egypt, Red Sea.

Jeff Rotman / Close-up of scales of the Yellowbar Angelfish (Pomacanthus maculosus). Red Sea, Egypt.

Anup Shah / Defassa waterbuck {Kobus ellipsiprymnus defassa} amongst trees, Masai Mara GR, Kenya

Georgette Douwma / Yellowbar angelfish (Pomacanthus maculosus) predating a common / moon jellyfish (Aurelia aurita). Red Sea, Egypt

Yva Momatiuk & John Eastcott / Waterbuck (Kobus ellipsiprymnus) male with engorged pre-orbital scent-glands below eyes, Masai Mara National Reserve, Kenya

Bernard Castelein / Waterbuck portrait {Kobus ellipsiprymnus} Masai Mara GR, Kenya

Jabruson / Aerial view of Defassa waterbuck {Kobus ellipsiprymnus defassa} wading through shallow water of lake, Lake Nakuru NP, Kenya

Jabruson / Single Defassa waterbuck fording shallows, Lake Nakaru NP, Kenya

Naskrecki & Guyton / White-backed vultures (Gyps africanus) feed in a frenzy at a waterbuck carcass (Kobus ellipsiprymnus), Gorongosa National Park, Mozambique. Waterbuck are large animals with tough hides, and in Gorongo...

Jen Guyton / Waterbuck (Kobus ellipsiprymnus) females led onto a truck for translocation to Maputo Special Reserve, Gorongosa National Park, Mozambique. October 2016.