Antarctic fur seal pups (Arctocephalus gazella) playing in Fortuna Bay on South Georgia, Southern Ocean, Polar Regions

A pod of Pacific white-sided dolphins (Lagenorhynchus obliquidens) leaping and surfacing in Johnstone Strait, British Columbia, Canada, North America

An adult Pacific white-sided dolphin (Lagenorhynchus obliquidens) bow-riding in Johnstone Strait, British Columbia, Canada

Young brown bear (Ursus arctos) scratching its back on the gravel at the Brooks River, Katmai National Park, Alaska, United States of America

Southern elephant seal (Mirounga leonina) weaner pups mock fighting on the beach at Gold Harbour, South Georgia Island, Polar Regions

Young Galapagos sea lion bulls (Zalophus wollebaeki) mock-fighting in the Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Young southern elephant seal (Mirounga leonina) bulls mock-fighting among king penguins at Gold Harbour, South Georgia, Polar Regions

Galapagos sea lion (Zalophus wollebaeki) pup takes over a small fishing boat on Isabela Island, Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Young Galapagos sea lions (Zalophus wollebaeki) at play underwater in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America

Antarctic fur seal pup (Arctocephalus gazella) on Prion Island in the Bay of Isles on South Georgia, Southern Ocean, Polar Regions

Male southern elephant seal (Mirounga leonina) pups mock fighting on South Georgia Island, Southern Ocean

Male southern elephant seal (Mirounga leonina) pups mock fighting on South Georgia Island, Southern Ocean

Male southern elephant seal (Mirounga leonina) pups mock fighting on South Georgia Island, Southern Ocean

Antarctic fur seal pups (Arctocephalus gazella) playing in Fortuna Bay on South Georgia, Southern Ocean, Polar Regions

Chinstrap penguins (Pygoscelis antarctica), ecstatic display at breeding colony at Half Moon Island, Antarctica, Polar Regions

Young Galapagos sea lion bulls (Zalophus wollebaeki) mock-fighting in the Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Indian Langur monkeys, Presbytis entellus, in Banyan Tree in Ranthambhore National Park, Rajasthan, Northern India

Indian Langur monkeys, Presbytis entellus, in Banyan Tree in Ranthambhore National Park, Rajasthan, Northern India

Indian Langur monkeys, Presbytis entellus, in Banyan Tree in Ranthambhore National Park, Rajasthan, Northern India