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Stromatolites, one of the most ancient life forms on earth, mats of micro-organisms that become rock-like structures through accretion of calcium carbonate, in highly saline lagoons like here in Lake Thetis, Cervantes, Dandaragan Shire, Western Australia, Australia, Pacific

Grey Crowned Cranes (Balearica regulorum) in front of Mount Muhavura, one of three peaks in the Mgahinga Gorilla National Park in southern Uganda. The grey crested crane is the national bird of Uganda. Mt Muhavura forms part of the Virungas mountains.

A pool coloured red from algae that have been fertilized by seabird guano on the Farne Islands, Northumberland, UK.

Young emperor penguins (Aptenodytes forsteri) huddling together to form a creche to keep warm, during storm, Dawson Lambton Glacier, Weddell Sea, Antarctica, Polar Regions

A frozen Stickle Tarn with crack patterns in the ice, above the Langdale valley with Pavey Ark in the background, Lake District, Cumbria, England, United Kingdom, Europe

The Fjallsjokull glacier which forms part of the Vatnajokull glacier, in the southeast, Iceland, Polar Regions

Fjallsarlon Lake and the Fjallsjokull glacier which forms part of the Vatnajokull glacier, in the southeast, Iceland, Polar Regions

Fjallsarlon Lake and the Fjallsjokull glacier which forms part of the Vatnajokull glacier, in the southeast, Iceland, Polar Regions

Goldenrod crab spider (Misumenia vatia) adult female, white form, camouflaged on Wild Angelica (Angelica sylvestris) flowers sinking fangs into the head of a large Horse fly (Dasyrhamphis anthracinus), Corsica, France. MORE INFO: Crab spider family Thomisidae, Horse fly family Tabanidae, plant family Apiaceae.

Ice in all of its myriad forms in the Svalbard Archipelago, Norway. MORE INFO Global climate change is affecting the formation and duration of ice in all its form here in Svalbard.

The Fuglefjellet cliffs (411m) on Bear Island (Bjornoya) in the Svalbard Archipelago, Norway. MORE INFO These cliffs form the highest seabird cliffs in the North Atlantic Ocean.

Views of the volcanic island Surtsey (Icelandic, meaning "Surtur's island"), the southernmost point of Iceland

With a surface area of 68,800-úsquare kilometres (26,600-úsq-úmi), Lake Victoria is AfricaG®ös largest lake, and the largest tropical lake in the world. The Rail track meanders across Lake Victoria, just upstream from where the Victoria Nile river forms. This is the furthest point, and considered the source of the River Nile, the worldG®ös longest river. Jinja, Uganda, East Africa

Bat Swarmings, Bat Colony, Camp of Bats, Evening exodous of bats form Deer Cave. Mulu National Park, Sarawak, Borneo, Malaysia, Asia

Semyon Dezhnev settlement, abandoned and ruined, Cape Dezhnev (Chukotskiy Peninsular ) Russia, Asia. MORE INFO: cape that forms the easternmost mainland point of Eurasia. In 1898 it was officially renamed Cape Dezhnev, replacing Captain James Cook's 'East Cape', in honor of Semyon Dezhnyov, the first recorded European to round it (1648). There is a large monument to Dezhnev on the coast.

Semyon Dezhnev settlement, abandoned and ruined, Cape Dezhnev (Chukotskiy Peninsular ) Russia, Asia. MORE INFO: cape that forms the easternmost mainland point of Eurasia. In 1898 it was officially renamed Cape Dezhnev, replacing Captain James Cook's 'East Cape', in honor of Semyon Dezhnyov, the first recorded European to round it (1648). There is a large monument to Dezhnev on the coast.

When the shed skin nears the tail, the newly formed chrysalis begins to shake very vigorously until the skin falls to the ground, then it settles down to form the butterfly within. The shape of the wings, anttenae and eyes can already be clearly seen. The process completes in seven to ten days. . Isle of White, UK. Isle of White, UK

When the shed skin nears the tail, the newly formed chrysalis begins to shake very vigorously until the skin falls to the ground, then it settles down to form the butterfly within. The shape of the wings, anttenae and eyes can already be clearly seen. The process completes in seven to ten days. . Isle of White, UK. Isle of White, UK

Sand dunes blown and shaped by the wind on an outwash plain below the Russell Glacier near Kangerlussuaq in Greenland, Polar Regions

Surreal patterns form in calm waters at sunset in the Gulf of California (Sea of Cortez), Baja California Norte, Mexico.

Ice in all of its myriad forms in the Svalbard Archipelago, Norway. MORE INFO Global climate change is affecting the formation and duration of ice in all its form here in Svalbard.

Ice in all of its myriad forms in the Svalbard Archipelago, Norway. MORE INFO Global climate change is affecting the formation and duration of ice in all its form here in Svalbard.

Semyon Dezhnev settlement, abandoned and ruined, Cape Dezhnev (Chukotskiy Peninsular ) Russia, Asia. MORE INFO: cape that forms the easternmost mainland point of Eurasia. In 1898 it was officially renamed Cape Dezhnev, replacing Captain James Cook's 'East Cape', in honor of Semyon Dezhnyov, the first recorded European to round it (1648). There is a large monument to Dezhnev on the coast.

Semyon Dezhnev settlement, abandoned and ruined, Cape Dezhnev (Chukotskiy Peninsular ) Russia, Asia. MORE INFO: cape that forms the easternmost mainland point of Eurasia. In 1898 it was officially renamed Cape Dezhnev, replacing Captain James Cook's 'East Cape', in honor of Semyon Dezhnyov, the first recorded European to round it (1648). There is a large monument to Dezhnev on the coast.

Ice in all of its myriad forms in the Svalbard Archipelago, Norway. MORE INFO Global climate change is affecting the formation and duration of ice in all its form here in Svalbard.

Surreal patterns form in calm waters at sunset in the Gulf of California (Sea of Cortez), Baja California Norte, Mexico.

Ice in all of its myriad forms in the Svalbard Archipelago, Norway. MORE INFO Global climate change is affecting the formation and duration of ice in all its form here in Svalbard.

Surreal patterns form in calm waters at sunset in the Gulf of California (Sea of Cortez), Baja California Norte, Mexico.

Scenes from in and around the small town of Hellemobotn, Tysfjord in northern Norway. MORE INFO Ice melt runoff forms waterfalls and rivers in this northern town.

Ice in all of its myriad forms in the Svalbard Archipelago, Norway. MORE INFO Global climate change is affecting the formation and duration of ice in all its form here in Svalbard.

Surreal patterns form in calm waters at sunset in the Gulf of California (Sea of Cortez), Baja California Norte, Mexico.

Ice in all of its myriad forms in the Svalbard Archipelago, Norway. MORE INFO Global climate change is affecting the formation and duration of ice in all its form here in Svalbard.

Scenes from in and around the small town of Hellemobotn, Tysfjord in northern Norway. MORE INFO Ice melt runoff forms waterfalls and rivers in this northern town.

Surreal patterns form in calm waters at sunset in the Gulf of California (Sea of Cortez), Baja California Norte, Mexico.

Surreal patterns form in calm waters at sunset in the Gulf of California (Sea of Cortez), Baja California Norte, Mexico.

Surreal patterns form in calm waters at sunset in the Gulf of California (Sea of Cortez), Baja California Norte, Mexico.

This is the nebula rich region in the constellation of Monoceros the Unicorn with the dark Cone Nebula (left of centre) and the small V-shaped and bright Hubble's Variable Nebula at bottom, a reflection nebula that varies in form and brightness. Above the Cone Nebula is the triangular Christmas Tree Cluster, NGC 2264, here upside down as the bright blue star 15 Mon is the base of the tree. The large region of nebulosity is Sharpless 2-273. The V-shaped dark nebula above centre is LDN 1603.

Portrait of a juvenile specimen of damselfish (Chromis chromis). Before taking the typical dark brown color of their adult form, these fishes have magnificent electric blue bands. The juvenile specimens are very small, a few centimeters, and they move with nervous and unpredictable movements without any moment of pause.

A telescopic closeup of Comet Lovejoy (C/2014 Q2) on January 17, 2015, showing structure in the ion gas tail, in the form of streamers and discontinuities in the tail.

Indian Tiger White Form, White tiger, Bengal tiger, (Panthera tigris tigris), adult in water, India, Asia

Strong winds form the typical Foehn cloud around the top of Schreckhorn, Grindelwald, Jungfrauregion, Bernese Oberland, Canton Bern, Switzerland, Europe

Ales stenar biggest old stone circle in form of a ship in Scandinavia near Kaseberga after sunset, Skane, Sweden

Pygmy seahorse (Bargibanti hippocampus) on a branch of coral, Great Barrier Reef, a UNESCO World Heritage Site, Queensland, Cairns, Australia, Pacific Ocean

Group of Adelie penguins (Pygoscelis adeliae) on an iceberg, natural arch iceberg in the back, Paulet Island, Erebus and Terror Gulf, Antarctic Peninsula, Antarctica

Picturesque red-brown sandstone cliffs form a unique landscape. Grandiose rock compositions natural origin. The various geological formations of Arches Park. Utah, USA, North America

Dead Sea. Evaporated salt forms bizarre patterns on the water. Sunny winter day. The blue water is surrounded by pink mountains. The picture was taken by a drone from a aerial view. Israel

Wide asphalt highway among picturesque hills and rocks of bizarre shapes. The grandiose landscapes of America. Utah Red Sandstones. Fine autumn day

Ice floes on the Baltic Sea off Stein, Probstei, Ploen district, Schleswig-Holstein, Germany, Europe

So-called sandfalls, red sandstone of the Moenkopi formation, rock formations, colours and textures in the Upper Antelope Slot Canyon, Page, Navajo Nation Reservation, Arizona, United States of America, USA