Aquatic Black Holes

Scientists have recently discovered that not only do black holes exist in the cold outer space but they also exist here on earth in our oceans. Scientists from university of Miami and ETH Zurich discovered large ocean eddies on earth, which are mathematically equal to black holes that appear in space. They are similar because anything trapped cannot escape. Researchers have known for a long time that massive eddies exist in our oceans and that they can have a large impact on the climate. These eddies exist on an immense scale, often spanning some 150 kilometers in diameter. If you swam into one, you probably wouldn't know it. Though they act like vortices, the sheer size of them makes it difficult to identify their exact boundaries. New mathematical technique introduced by researchers finally is letting us figure out more about these eddies. The technique looks for similar mathematical structures in the ocean as are known to occur at the edges of black holes. One of the researchers, George Haller, said "The boundaries of water-carrying eddies satisfy the same type of differential equations that the area surrounding black holes do in general relativity." The boundaries of the eddies have not been identified but researchers are working hard at figuring out more and more about these interesting aquatic “black holes.” 

Citation:
http://www.mnn.com/earth-matters/climate-weather/stories/scientists-discover-black-holes-in-earths-oceans