Adult gentoo penguin (Pygoscelis papua), porpoising for swimming speed near the Antarctic Peninsula, Southern Ocean, Polar Regions

Adult humpback whales (Megaptera novaeangliae) co-operatively bubble-net feeding in Southeast Alaska, United States of America

Adult brown bears (Ursus arctos) foraging for salmon at the Brooks River, Katmai National Park, Alaska, United States of America

Members of the Langdale Ambleside Mountain Rescue Team train in Swift water rescue techniques on the River Brathay at Skelwyth, Lake District, Cumbria, England, United Kingdom, Europe

Members of the Langdale Ambleside Mountain Rescue Team train in Swift water rescue techniques on the River Brathay at Skelwyth, Lake District, Cumbria, England, United Kingdom, Europe

Members of the Langdale Ambleside Mountain Rescue Team train in Swift water rescue techniques on the River Brathay at Skelwyth, Lake District, Cumbria, England, United Kingdom, Europe

Caucasian family swimming in lake

Water spraying on black woman dancing

Caucasian father and son swimming in lake

Caucasian father and son swimming in lake

Caucasian father and son swimming in lake

Caucasian father and son swimming in lake

Caucasian girl swimming in lake

Caucasian family swimming in lake

Caucasian father and daughter swimming in lake