An international team of researchers has discovered thousands of new mountains under water, at the bottom of the ocean. A group of American and European scientists has detected mountains under water by using newly designed radar satellites. While the previous radar dataset could detect everything taller than 2km, new dataset has capability of discovery of things that are 1.5km tall, according to the study report published in Science Magazine. "That might not sound like a huge improvement but the number of seamounts goes up exponentially with decreasing size,” said Dave Sandwell the findings researchers. “We may be able to detect another 25,000 on top of the 5,000 already known," the Scripps Institution of Oceanography researcher explained. Knowing the roughness of the seafloor as well as location of seamounts are important for fisheries management, conservation and oceans transport, experts say. "You may generally think that the great age of exploration is truly over, but sadly this is not true. We know much more about the topography of Mars than we know about the seafloor," said Dietmar Müller from the University of Sydney.