Sharaan Nature Reserve, AlUla, Medina Province, Saudi Arabia

Ribera dos Caldeiroes waterfalls, near Achada, Sao Miguel, Azores Islands, Atlantic, Portugal

Glacial iceberg detail from ice calved off the Sawyer Glacier in Tracy Arm, Southeast Alaska, United States of America

Sunset at Fjallsarlon glacier lagoon on the edge of Vatnajokull National Park, South Iceland, Iceland

A myriad of fish and coral underwater at Hol Chan Marine Preserve, inside the Mesoamerican Barrier Reef, Belize

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

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

Fairy chimney rock formations, Pasabag Valley, Cavusin, Cappadocia, Anatolia, Turkey, Asia Minor, Asia

Canyon with sandstone walls in the Sharaan Nature Reserve, AlUla, Medina Province, Saudi Arabia

Alqaleebah Gate's sign of Sharaan Nature Reserve, AlUla, Medina Province, Saudi Arabia

Beautiful rock formations around Zouar, Tibesti Mountains, Chad

Reflections in the Sangha River, Dzanga Sangha National Park, UNESCO, Central African Republic

Reflections in the Sangha River, Dzanga Sangha National Park, UNESCO, Central African Republic

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

Giant's Causeway, County Antrim, Ireland, Basalt Columns