Claudio Contreras / Grey whale (Eschrichtius robustus) breaching, San Ignacio Lagoon, El Vizcaino Biosphere Reserve, Baja California, Mexico, March

Claudio Contreras / Grey whale (Eschrichtius robustus) tail, San Ignacio Lagoon, El Vizcaino Biosphere Reserve, Baja California, Mexico, March

Claudio Contreras / Grey whale (Eschrichtius robustus) calf, San Ignacio Lagoon, El Vizcaino Biosphere Reserve, Baja California, Mexico, February

Mark Carwardine / Grey whale (Eschrichtius robustus) at water surface with mouth open showing baleen plates, San Ignacio Lagoon, Baja California, Mexico

Tony Wu / Grey whale (Eschrichtius robustus) calf at ocean surface, with its mother visible, Magdalena Bay, Baja California, Mexico.

Bruno D'Amicis / Young Fennec fox (Vulpes zerda) cub, offered for sale to the photographer by the young man who trapped it in the desert. Kebili Region, Tunisia. May 2014. Winner of the World in our Hands category, Wi...

Wild Wonders of Europe / Campbell / Female Bottlenosed dolphin (Tursiops truncatus) with calf surfacing, patrolling rip-current searching for salmon / sea trout, Moray Firth, Nr Inverness, Scotland, May 2008

Franco Banfi / Grey whale (Eschrichtius robustus) skeleton on beach. Magdalena Island, Magdalena Bay, Baja California Sur, Mexico.

Mark Carwardine / Grey whale / gray whale (Eschrichtius robustus) aerial. Baja California, Mexico

Mark Carwardine / Grey whale / gray whale (Eschrichtius robustus) aerial. This individual has been feeding on seabed with clouds of sand and mud spewed out of mouth afterwards. Baja California, Mexico

Mark Carwardine / Grey whale / gray whale (Eschrichtius robustus) aerial, curious female and calf, San Ignacio Lagoon, Baja California, Mexico

Mark Carwardine / Grey whale / gray whale (Eschrichtius robustus) aerial, curious female and calf approaching boat, San Ignacio Lagoon, Baja California, Mexico