Alex Mustard / Yellowtail tang (Zebrasoma xanthurum) male and female turn belly to belly during spawning to ensure fertilization. Temple, Ras Umm Sid, Sharm El Sheikh, Sinai, Egypt. Red Sea. This action is very fast...

Espen Bergersen / Aerial shot of a Humpback whale (Megaptera novaeangliae) swimming showing belly, Troms, Norway, January.

Espen Bergersen / Aerial shot of a Humpback whale (Megaptera novaeangliae) showing belly and blowing, Troms, Norway, January.

Yukihiro Fukuda / Japanese macaque (Macaca fuscata fuscata) mother carrying rare white furred baby on belly, Jigokudani Valley, Nagano Prefecture, Japan. June.

Solvin Zankl / Porcupinefish (Diodontidae) tiny juvenile, found in plankton community, Sargasso Sea, Bermuda.

Ole Jorgen Liodden / Ivory gull (Pagophila eburnea) behind Polar bear (Ursus maritimus) framed by its legs, Svalbard, Norway, July.

Christophe Courteau / Mountain Gorilla (Gorilla beringei) dominant male silver back sitting amongst vegetation. 2700 metres above sea level in Volcanoes National Park, Rwanda. short dry season, February

Anup Shah / Female Proboscis monkey (Nasalis larvatus) carrying a baby under her belly and jumping. Bako National Park, Sarawak, Borneo, Malaysia, April 2010.

Doug Perrine / Researcher Guy Stevens photographs belly spot identification pattern of Reef manta ray (Manta alfredi formerly Manta birostris) feeding on plankton, Hanifaru Bay, Baa Atoll, Maldives, Indian Ocean, Oc...

Anup Shah / Common / Plains Zebra (Equus quagga burchellii) herd drinking from the Mara River - wide angle underbelly perspective, Masai Mara National Reserve, Kenya. September

Anup Shah / Common / Plains Zebra (Equus quagga burchellii) adult leaping as herd runs away from the Mara River - wide angle perspective, Masai Mara National Reserve, Kenya. September