Nature has the ability to produce scenes that appear almost impossible. Whether it’s millions of animals moving in unison or odd patterns showing up in deserts and lakes, certain natural phenomena are so unusual that they seem as though they come from another world.All over the planet visitors come to see these events for themselves, and the following are five of the most astonishing natural phenomena to be found around the world.5. Crab MigrationEach year millions of red crabs on Christmas Island in Australia travel towards the sea in order to mate and lay their eggs, and their migration turns the roads, forests and other areas of the island into a constantly moving sea of bright red.Since the journey is so significant, the residents have constructed bridges and tunnels in order that the crabs may travel more safely. The special structures enable the animals to cross roads and other obstacles without disrupting their migration.4. Glowing WavesThe waters near San Diego, California, may at times shine a vivid blue at night. The phenomenon is usually linked with what is known as a red tide, but the glowing is due to bioluminescent phytoplankton.Tiny organisms have the ability to give off light when they are disturbed by movement in the water. When waves hit the shore, the microorganisms produce a strange blue luminescence which makes the ocean look as though it is nearly lit from within.3. Capelin RollEach year millions of small capelin fish go to the beaches of Newfoundland and Labrador, Canada, in order to reproduce; this phenomenon is called the capelin roll since huge numbers of the fish move towards the shore as part of a spectacular mass gathering.The fish roll onto the beach in order to bury their eggs in the sand. Although many of them die while doing so, the huge number that take part makes the event one of the most spectacular displays of wildlife in the area.2. Miracle Sea RoadOn Jindo Island in South Korea the sea seems to break apart at particular times of the year because of very low tides which reveal a stretch of sand two point nine kilometres long between the island and the adjacent land.In April people come together for a festival and walk along the open path; the sight is almost biblical in that hundreds of them cross what looks like a temporary road across the sea.1. Fairy CirclesIn the vast expanse of the Namib Desert in Africa, strange circular patches are found amongst the vegetation. These so-called fairy circles consist of areas of bare ground surrounded by grass, thus producing unusual patterns that can extend across the desert landscape.Scientists and tourists have always been interested in the exact cause. Some researchers have suggested that termite colonies which are hungry might be involved, while other explanations have also been put forward.Things like luminous oceans, crabs that migrate and strange circular patterns in the desert show just how amazing the natural world can be. It still feels incredibly unbelievable to see them even if science is able to explain how they occur.