The most incredible natural phenomena around the world

Puerto Rico's Bioluminescent Lagoon Goes Nearly Dark

Nature has helped produce stunning wonders around the world.

Some of these natural phenomena are so bizarre that it can be tough to believe they exist, but the breathtaking and eerie wonders reveal nature's immense power.

From a bright pink lake in Australia to the Northern Lights, here are some of the world's most fascinating natural marvels.

In Morocco, goats climb up argan trees in order to eat their fruit. The site is not uncommon to locals, but travelers are often shocked to see the bizarre phenomenon.

Flickr/Fred Dunn
Source: Lonely Planet

Grüner See (Green Lake), located below Austria's Hochschwab mountains near the town of Tragoess, seems like just another lake at first glance...

Shutterstock/Elena Schweitzer
Source: Huffington Post

But what's fascinating is that in the winter, it is only three to six feet deep and is surrounded by parkland. In the summer, snow from the mountains melts and increases the depth of the lake to 40 feet, with the surrounding parkland becoming completely submerged.

Flickr/TauchSport_Steininger
Source: Huffington Post, Daily Mail
Read more about Green Lake »

Cashiers is a town located in the center of the Blue Ridge Mountains in North Carolina. For 30 minutes everyday at 5:30 p.m. from late October through early November and again from mid-February to early March, you can see a shadow in the shape of a giant bear.

Flickr/bluesman46
Source: Huffington Post

One of nature's most spectacular displays, the Northern Lights are formed from electrically charged particles from the sun that combine with different gases to produce a multicolored light show. They typically occur from September to early April in destinations like Canada, Alaska, Iceland, and northern Scandinavia.

Shutterstock/CoolKengzz
Source: Telegraph

After a flood hit the Pakistani village of Sindh in 2010, millions of spiders crawled to safety in the trees and spun their webs. The result led to fascinating web-cocooned trees.

Flickr/DFID - UK Department for International Development
Source: National Geographic

Lake Hillier, located in Australia's Rechercha Archipelago, is not the only pink lake to exist, but while other pink lakes change colors in different temperatures, Lake Hillier maintains the same color year-round, even when bottled. The cause of the color remains undetermined, though some say it could be the result of its high salt content combined with the presence of a pink bacteria species.

Shutterstock/vvvita
Source: Condé Nast Traveler

Every year, from May through July, millions of sardines swim from the cold waters of South Africa's Cape Point to the KwaZulu-Natal coast. They travel in close packs, making for a stunning whirlpool that divers around the world come to see.

Shutterstock/paul cowell
Source: Daily Mail

Colombia's Caño Cristales, located in the Serrania de la Macarenia National Park, is composed of an acquatic plant known as macarenia clavier that takes on hues of red, blue, yellow, orange, and green under specific weather conditions. Most of the year it looks like any other river, but from June to December, it is said to look like a breathtaking river of rainbows.

Flickr/Eric Pheterson
Source: BBC Travel

In destinations like Puerto Rico and the Maldives, bioluminescent phytoplankton create stunning shimmering waters.

Shutterstock/PawelG Photo
Source: National Geographic

Every summer, around 1.5 million bats take flight over the skies of Austin, Texas, producing an awe-inspiring nature show.

Flickr/J. Griffin Stewart
Source: BBC Travel

Kawah Ijen volcano, located in East Java, Indonesia, is famous for its bright blue fire that streams down the mountain in the evenings. According to National Geographic, the glow comes from the combustion of sulfuric gases that emerge from cracks in the volcano at high pressure.

Flickr/Stéphane DAMOUR
Source: National Geographic

For years, large stones have been moving across California's Racetrack Playa of Death Valley National Park. While it seemed that they had been moving on their own, scientists discovered that a thin layer of ice trapped underneath the rocks melts away in the sun, slowly moving the rocks for years to leave behind their stretching trails.

Shutterstock/Vezzani Photography
Source: ABC News

The large population of glowworms that live in the Waitomo Glowworm Caves of Waitomo, on the North Island of New Zealand, produce a glittering cave for tourists to explore. Take a boat ride through the caves' underwater lakes while you look up at the shimmering surrounding.

Flickr/Karrde188
Source: Waitomo

Abraham Lake, located in Alberta, Canada, is filled with frozen bubbles. The bubbles are the result of methane gas released by the area's plants and animals.

Flickr/Fred Dunn
Source: Huffington Post

For most of the year, the red land crabs of Christmas Island, in Australia, reside in the forests. But around November, around 120 million of them emerge from the forest, crossing the area's roads and heading towards the Indian Ocean to release their eggs at the high tide.

Flickr/frogtrail images
Source: Huffington Post

The Richat Structure, also known as the Eye of the Sahara, stands as a large bulls'-eye in the middle of Africa's Sahara desert. With a diameter that spans almost 30 miles, it is thought to be the result of erosion and stands as a marvel for scientists and travelers alike.

Flickr/Daniel Oines

Source: NASA

Circumhorizontal arcs, or Fire Rainbows, form when sunlight enters ice crystals in the high levels of clouds, splitting them into an array of colors. They're typically only spotted in the summer, considering that the sun needs to be at an elevation of 58° or higher for the phenomenon to occur.

Shutterstock/Thawornnurak
Source: The Weather Channel

Monarch butterflies are the only butterflies who can make a two-way migration. Every year, they take to the skies from eastern North America to the Sierra Madre Mountains of Mexico (during the end of October) and from western North America to California.

Flickr/Luna sin estrellas
Source: United States Department of Agriculture

Venezuela's Catatumbo Lightning is often called the Everlasting Storm and recently entered the Guinness Book of World Records because of the fact that it strikes 300 days of the year. The country's weather and topography has led to the continuous lightning.

REUTERS/Jorge Silva
Source: The Telegraph

A supercell occurs in severe thunderstorms in locations where cold dry air combines with warm tropical air. The massive funnel is the result of incoming wind that continues to swirl faster and faster until it forms a large barrel.

Flickr/Kelly DeLay
Source: Daily Mail

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