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Aurora Borealis over Sandvannet Lake in Troms County, Norway. Auroras are the result of the emissions of photons in the Earth's upper atmosphere.

Aurora Borealis over Vagsfjorden outside of Harstad in Northern Norway. Auroras are the result of the emissions of photons in the Earth's upper atmosphere.

A fantastic eruption of Aurora Borealis over Toviktinden Mountain in Troms County, Norway. Auroras are the result of the emissions of photons in the Earth's upper atmosphere.

Aurora Borealis over Tjeldsundet in Troms County, Norway. Auroras are the result of the emissions of photons in the Earth's upper atmosphere.

Aurora Borealis over Tennevik River in Troms County, Norway. Auroras are the result of the emissions of photons in the Earth's upper atmosphere.

Aurora Borealis over Sandvannet Lake in Troms County, Norway. Auroras are the result of the emissions of photons in the Earth's upper atmosphere.

Aurora Borealis over Sandvannet Lake in Troms County, Norway. Auroras are the result of the emissions of photons in the Earth's upper atmosphere.

Aurora Borealis over Tennevik River in Norway. Auroras are the result of the emissions of photons in the Earth's upper atmosphere.

Aurora Borealis over Vagsfjorden in Troms County, Norway. Auroras are the result of the emissions of photons in the Earth's upper atmosphere.

Aurora borealis over Blafjellet Mountain in Troms County, Norway. Auroras are the result of the emissions of photons in the Earth's upper atmosphere.

Aurora Borealis and a full moon over the Blafjellelva River in Troms County, Norway. Auroras are the result of the emissions of photons in the Earth's upper atmosphere.

Aurora Borealis over Skittendalen Valley and the Skittendalen River in Troms County, Norway. Auroras are the result of the emissions of photons in the Earth's upper atmosphere.

Aurora Borealis over Skittendalen Valley and the Skittendalen River in Troms County, Norway. Auroras are the result of the emissions of photons in the Earth's upper atmosphere.

Aurora Borealis over Forramarka Woods in Tennevik, Troms County, Norway. Auroras are the result of the emissions of photons in the Earth's upper atmosphere.

Aurora and a Full Moon over Tennevik River, Troms County, Norway. Auroras are the result of the emissions of photons in the Earth's upper atmosphere.

Sunset over Tjeldsundet, Troms County, Norway. Saetertinden and Harberget Mountains are visible in the background.

Sunset over Tjeldsundet, Troms County, Norway. Saetertinden and Harberget Mountains are visible in the background.

Aurora Borealis over Skittendalstinden in Troms County, Norway. Auroras are the result of the emissions of photons in the Earth's upper atmosphere.

Aurora over Tjeldsundet and Saetertinden Mountain in Troms County, Norway. Auroras are the result of the emissions of photons in the Earth's upper atmosphere.

Aurora Borealis over Mikkelfjellet Mountain in Troms County, Norway. Auroras are the result of the emissions of photons in the Earth's upper atmosphere.

Aurora borealis over Sandvannet Lake in Troms County, Norway. Auroras are the result of the emissions of photons in the Earth's upper atmosphere.

A school of Bluegill and Sunfish appear to swim toward the light from above over the Morrison Springs cavern dropoff at the state park in northwest Florida.

An adult American Eel (Anguilla rostrata) prowls along the edge of the Morrison Springs cavern at 85 feet deep watching over the adolescent eels in the clear freshwaters of the state park near Red Bay, Florida.

A Blackside Hawkfish (Paracirrhites forsteri) swims over the red tentacles of a sea fan in the warm clear waters off the coast of Likuri Island, Fiji.

A Blue Spotted Lagoon Fantail Ray (Taeniura lymma) peeking out from under a coral reef ledge, Papua New Guinea.

A Hi Utsuri koi fish swims over the rocky bottom of the clear freshwater of Vortex Spring shoreline in Ponce De Leon, Florida.

A Spotted Trunkfish (Lactophrys bilcaudalis) swims over an algae covered coral reef in the Atlantic Ocean off the coast of Key Largo, Florida.

A Porkfish (Anisotremus virginicus) swims by sea plumes out from under a coral reef ledge in the Atlantic Ocean off the coast of Key Largo, Florida.

A French Angelfish (Pomacanthus paru) swims up close to a Blue Striped Grunt (Haemulon sciurus) under a coral reef ledge in the Atlantic Ocean off the coast of Key Largo, Florida.

A Blue Chromis (Chromis cyanea) swims into the current to maintain station over a colorful reef in the Atlantic Ocean off the coast of Key Largo, Florida.

A large Goliath Grouper, Epinephelus itajara, effortlessly floats by and over the City of Washington shipwreck in about 60 feet of water off the coast of Key Largo, Florida.

A large Goliath Grouper, Epinephelus itajara, effortlessly floats by and over the City of Washington shipwreck in about 60 feet of water off the coast of Key Largo, Florida.

A large Goliath Grouper, Epinephelus itajara, effortlessly floats by and over the City of Washington shipwreck in about 60 feet of water off the coast of Key Largo, Florida.

Illuminated mountain hut hotel under the stars, Fluhalp, Zermatt, Valais Canton, Switzerland, Europe

Boat dock with boats moored on water with view over Schluchsee, Schwarzwald (Black Forest), Baden-Wurttemberg, Germany, Europe

October 19, 2013 - Eruption of Kliuchevskoi (Klyuchevskoy) Volcano, Kamchatka, Russia. Ash and steam cloud are blown away by wind. View over industrial area of Kliuchi town with Kamchatka River in foreground.

September 12, 2009 - Steam rising over Midway Geyser Basin geothermal area, Yellowstone Caldera, Yellowstone National Park, Wyoming.

View over Carolafelsen Rocks to Schrammstein Mountains at sunset, Saxony Switzerland National Park, Saxony, Germany, Europe

Blue and white striped Periclimenes shrimp over a mottled green and red anemone, Jardines De La Reina, Cuba.

Bumphead parrotfish (Bolbometopon muricatum) swimming over the Liberty Wreck in Tulamben, Bali, Indonesia.

Whale shark swimming under a boat, with sharp sunrays cutting through the water, Cenderawasih Bay, West Papua, Indonesia.

Whale shark coming up from the depths under the boat, mouth wide open, with sharp sunrays cutting through the water.

A large whale shark under a bagan, siphoning water from the surface, with sunrays shining in the water, Cenderawasih Bay, West Papua, Indonesia.

Pair of Chromodoris annae nudibranch with brilliant blue and yellow skirt, crawling over green and pink coral, Anilao, Batangas, Philippines.

Man photographing the snow falling over mountains during a trip on board of Gornergrat Bahn train, Zermatt, Valais, Switzerland, Europe

Aurora borealis over the city of Whitehorse, with Gray Mountain and shooting star, Whitehorse, Yukon, Canada.

Majestic mountains Eiger and Monch under pink clouds at sunset, Murren Birg, Jungfrau Region, Bern Canton, Swiss Alps, Switzerland, Europe

Blue sky over lone cottage among boreal forest covered with ice and snow, Kangos, Norrbotten, Swedish Lapland, Sweden, Scandinavia, Europe

Romanesque facade of Pisa Cathedral (Duomo) under romantic sky at sunrise, Piazza dei Miracoli, UNESCO World Heritage Site, Pisa, Tuscany, Italy, Europe

Narrow boat on Pontcysyllte Aqueduct, UNESCO, Llangollen Canal over valley of the River Dee, Wales, United Kingdom

Narrow boat on Pontcysyllte Aqueduct, UNESCO, Llangollen Canal over valley of the River Dee, Wales, United Kingdom

Evening panorama over olive trees in the hills of Albaicin, to the Sierra Nevada, Granada, Andalucia, Spain

Sunset over hilly landscape in front of the Snowy Sierra Nevada, Albaicin, Granada, Andalucia, Spain

Sunset over arid hilly landscape in front of the snowy Sierra Nevada, Albaicin, Granada, Andalucia, Spain