This is a continuation of my previous list of 25 Spectacular and Rare Natural Phenomenon. Enjoy.
20. Etruscan Vase Moon
During full moon, in some places moon can be seen strangely distorted as it arises. This odd moon image was created by moonlight refracting through an atmospheric inversion layer on Earth where cold air was trapped near the surface. The photographer also reported that, as the moon rose, a red rim was faintly visible on the lower part of the moon, while a green rim appeared on the top, similar to the Sun’s famous green flash.
19. Green Lake, Austria
On the bed of the emerald green waters of Green Lake, Austria underwater explorers will discover fish swimming though the branches of trees, a floor covered in grass, benches, bridges and a landscape that looks like it belongs over ground. It is because for half of the year it is over ground. In the frozen winter months the area is almost completely dry and is a favorite site for hikers. As the temperature begins to rise in spring, the ice and snow on the mountaintops begins to melt and runs down into the basin of land below. The waters are at their highest in June when it becomes a mecca for divers keen to explore the rare phenomenon, before the waters recede at the end of July.
18. Underwater Crop Circles
The mystery circle as it was first called was more than six feet in diameter and contained intricate patterns of ridges radiating out from the center. The unexpected artist of this sand circle was found to be a tiny male puffer fish. It spent days and nights to make the circle using only a flapping fin to attract a mate. After completing the circle the fish actually decorated it with broken pieces of shells. Females who mated with the male laid their eggs in the center of the circle. As for the seashells, they, too, may be more than just decoration. It’s possible they provide nutrients to the young puffer fish as the eggs hatch.
17. Baltic and North Seas Meet
In the resort town of Skagen you can watch an amazing natural phenomenon. This city is the northernmost point of Denmark, where the Baltic and North Seas meet. The two opposing tides in this place cannot merge because they have different densities.
16. Tree Spiders
In July of 2010 floods swamped parts of Pakistan. An unexpected side-effect of the massive flooding was that millions of spiders turned trees into cocoons. They crawled into trees to escape the rising flood waters. Because of the scale of the flooding and the fact that the water took long to recede, many trees became cocooned in spiders’ webs. Locals had never before seen such a phenomenon before, but they also reported unexpected decline in mosquito population.
15. Underwater Lakes (Brine Pools)
Underwater lakes, or brine pools, are areas of water with an extremely high concentration of salt. The concentrations of salt are so high that the mixture is heavier than water and so lies underneath the normal sea water. The high salinity of these pools prevents water of lower salinity from entering and creates a distinct surface and shoreline for the pool. The surface of these pools behave quite similarly to the surface of a regular pool, with waves and everything.
14. Ball Lightning
Ball lightning is described as a luminous sphere of lightning which seems to appear out of nowhere and vanishes into thin air. It varies in size from 2 to 10 inches in diameter. They are reportedly seen around thunderstorm and usually hover parallel to earth. Balls that appear distinctly orange and blue seem to last longer than average.
13. Brinicle (Ice Stalactite)
Brincicle or ice stalactite form beneath sea ice when a flow of extremely cold, saline water is introduced to an area of ocean water. The formation of a brinicle was first filmed in 2011 for the BBC series Frozen Planet. You can watch the video here. The sinking brine is so cold that it causes the seawater to freeze around it. When it hits the seabed, a web of ice spreads killing sea urchins and starfish.
12. Ice Circles
Ice circles occur in slow moving waters in cold climates. They are thin and circular slabs of ice that rotate slowly in the water. They are most frequently observed in Scandinavia and North America. They are usually small, but they have been reported to be more than 4 meters in diameter.
11. Snow Rollers
A snow roller is a rare meteorological phenomenon in which large snowballs are formed naturally as chunks of snow are blown along the ground by wind, picking up material along the way. Unlike snowballs, snow rollers are typically cylindrical in shape, and are often hollow since the inner layers, which are the first layers to form, are weak and thin compared to the outer layers.
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