Curious adult bull walrus (Odobenus rosmarus rosmarus) approach the ship at Moffen Island in the Svalbard Archipelago, Norway, Arctic, Europe

A curious young polar bear (Ursus maritimus) approaches the National Geographic Explorer in the Svalbard Archipelago, Norway, Arctic, Europe

Southern right whale (Eubalaena australis) calf surfacing near Puerto Pyramides, Golfo Nuevo, Peninsula Valdez, Argentina

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

Southern right whale (Eubalaena australis) mother surfacing near whale watching boat in Argentina, South America

Encounter with dromedaries on the road that crosses the Harrat volcanic plateau, AlUla, Medina Province, Saudi Arabia

Tourists hand-feeding tarpon (Megalops atlaticus), at feeding station inside the Mesoamerican Barrier Reef, Belize