A breaching humpback whale calf (Megaptera novaeangliae), off Maui, Hawaii, United States of America, Pacific, North America

European brown bear (Ursos arctos arctos) swimming, Finland

Adelie penguin (Pygoscelis adeliae), leaping into the sea at Booth Island, Antarctica, Polar Regions

Juvenile Galapagos brown pelican (Pelecanus occidentalis urinator), smallest species of pelican worldwide, feeding in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America

Galapagos heron (Butorides sundevalli) fishing along the lava shore in the Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Chinstrap penguin (Pygoscelis antarctica) porpoising in Cooper Bay, South Georgia

Chinstrap penguin (Pygoscelis antarctica) porpoising in Cooper Bay, South Georgia

Northern (Steller) sea lion (Eumetopias jubatus) fishing on the flood tide in Inian Pass, Southeastern Alaska, United States of America

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

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

A pod of Pacific white-sided dolphins (Lagenorhynchus obliquidens) bow-riding in Johnstone Strait, British Columbia, Canada

A juvenile killer whale (Orcinus orca) head-lunging in Chatham Strait, Southeast Alaska, United States of America, Pacific Ocean, North America

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

Adult macaroni penguin (Eudyptes chrysolophus) porpoising for speed while traveling to their breeding colony on South Georgia, Southern Ocean, Polar Regions

Adult macaroni penguins (Eudyptes chrysolophus) plunging into the sea leaving their breeding colony at Elsehul on South Georgia, Southern Ocean, Polar Regions

Galapagos sea lion (Zalophus wollebaeki) underwater in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America