The fairy tern is a similar size to a hooded plover - so tiny, it would sit comfortably in the palm of your hand. They lay just two eggs, onto the beach sand. See these remarkable images from Tasmanian-based bird ecologist Dr Eric Woehler.

Southwest National Park in Tasmania is a vast, mostly trackless wilderness containing ancient forests, the wildest rivers, a glaciated and mountainous landscape and a spectacular coastline with rich aboriginal history.

Bryce Canyon National Park in southern Utah is home to the greatest collection of distinctive spire-shaped rock formations called hoodoos on Earth. Its super-ancient sediment layering dates back to the end of the Cretaceous period, more than 66 million years ago.

Kunanyi is shaped by ancient dolerite rock formations, sculpted over millions of years by ice, wind and rain. From towering cliffs to scattered boulders and caves, these photographers captures its beauty. 

Takayna / Tarkine is a hugely diverse wild landscape with an extraordinary history. Largely unprotected this region has huge potential for national park and world heritage status.

The two thousand-foot deep red sandstone canyon through Zion National Park is a majestic masterpiece, carved out over ancient time by the Virgin River. Known for its intense seasonal colours and dramatic vistas and established in 1919, Zion is Utah's first National Park.

The triangle-shaped island of Panay is the sixth-largest of the Philippines archipelago, and has an amazing array of landscapes and biodiversity hotspots, including the Central Panay Mountain Range. As the fourth-most populous island of the Philippines, it is also facing conservation challenges.

The dusky dolphin is one of the smaller dolphin species with a maximum weight of about 85 kilograms and a length, of just over two metres. The dusky dolphin is a social species, known for its agility and coordinated acrobatic abilities.

Antartica, the Southern Ocean and the sub-Antarctic islands host a rich variety of extraordinary life, including penguins, seals, and whales

The aurora australis lights the skies of Southwest Tasmania. The next Dark Sky Sanctuary? Image: Dan Broun

The Scandinavian mountain range, the Scandes, runs through the border between Sweden and Norway. It covers most of Norway and stretches into the north-west regions of Sweden. These mountainous areas form some of Sweden's most remarkable wilderness.

Tasmania's marine environment is globally significant, with a rich mix of ecosystems and habitats fostering marine life found nowhere else on Earth

The Scandinavian mountain range, the Scandes, runs through the border between Sweden and Norway. It covers most of Norway and stretches into the north-west regions of Sweden. These mountainous areas form some of Sweden's most remarkable wilderness.

Southwest National Park in Tasmania is a vast, mostly trackless wilderness containing ancient forests, the wildest rivers, a glaciated and mountainous landscape and a spectacular coastline with rich aboriginal history.

The wild and special continent of Antarctica - captured by outdoor educator and guide Ewan Blyth. 

Imagery from the life of Duco, a Brazilian environmentalist, nature and bird-guide who found redemption in nature

The aurora australis lights the skies of Southwest Tasmania. The next Dark Sky Sanctuary? Image: Dan Broun

Snow leopards, golden marmot, markhor, golden eagles, lynx, and other wildlife species frequent the extraordinary region of Chitral & Gilgit Baltistan in Northern Pakistan

The fairy tern is a similar size to a hooded plover - so tiny, it would sit comfortably in the palm of your hand. They lay just two eggs, onto the beach sand. See these remarkable images from Tasmanian-based bird ecologist Dr Eric Woehler.

Bruny Island is an island, off an island, off an island, surrounded by islands. Image: Nick Monk

Antartica, the Southern Ocean and the sub-Antarctic islands host a rich variety of extraordinary life, including penguins, seals, and whales

The Atlantic Forest is one of the most biodiverse forests in the world including almost 1000 bird species. Here are a few of these birds from photographer Marcio Conrado.

Bryce Canyon National Park in southern Utah is home to the greatest collection of distinctive spire-shaped rock formations called hoodoos on Earth. Its super-ancient sediment layering dates back to the end of the Cretaceous period, more than 66 million years ago.

Tasmania's marine environment is globally significant, with a rich mix of ecosystems and habitats fostering marine life found nowhere else on Earth