What do a dancing polar bear, a thresher shark and a group of elephants have in common? They're just a few of the breathtaking images that have been selected as the Top 40 Nature Photographs to celebrate the ILCP's inaugural Earth Day Green Auction.
Skypunch Cloud -- This is a rare meteorological phenomenon called a skypunch. Sometimes when people see these, they think it's the end of the world. Ice crystals form above the high-altitude cirro-cumulo-stratus clouds, then fall downward, punching a hole in the cloud cover.