Ferry service on the Aurlandsfjord, an arm of the Sognefjord, the largest fjord in all of Norway, Vestland, Norway, Scandinavia, Europe

The Skomer ferry getting ready to pick up passengers on Skomer Island, off the coast of Pembrokeshire, Wales, United Kingdom, Europe

Tourists departing on a boat trip from Kalea Beach with active Karangetang volcano beyond, Kalea, Siau Island, Sangihe Archipelago, North Sulawesi, Indonesia, Southeast Asia, Asia

Lindblad Expeditions guests on board the National Geographic Explorer with a lone adult emperor penguin (Aptenodytes forsteri) on sea ice, Antarctica

Crew and guest on Zodiacs in the Atlantic Ocean from onboard the National Geographic Endeavour crossing the Atlantic Ocean from Lisbon, Portugal to Salvador, Brazil

Crew and guest on Zodiacs in the Atlantic Ocean from onboard the National Geographic Endeavour crossing the Atlantic Ocean from Lisbon, Portugal to Salvador, Brazil

Lindblad Expeditions guests on board the National Geographic Explorer with a lone adult emperor penguin (Aptenodytes forsteri) on sea ice, Antarctica

Loading exotic woods, Demerara River, Georgetown, Guyana, South America

Percussion instruments with colorful wall

Woman tourist with her son getting on the boat in Fiskardo village on Kefalonia island, Greece, Europe

Locals boarding train on platform, Yangon Circular Railway, Yangon, Myanmar, Asia

A backpacker crosses the exotic landscape of the ash and pumice-covered Valley of Ten Thousand Smokes in Katmai National Park, with Mt. Katmai (left), Trident Volcano (right), and the Knife Creek Glaciers looming in the distance; Alaska, United States of