Sharks Use Earth's Magnetic Field Like GPS to Navigate Oceans Sharks use their electrosensory organs to read the Earth’s magnetic field like a map By Edited by Gadgets 360 Newsdesk | Updated: 10 May 2021 14:41 IST Photo Credit: SciTechDaily Highlights The researchers used different magnetic fields The bonnetheads didn't elicit much response to the magnetic fields How do sharks navigate through the deep, dark world under the seas? Scientists now say they have the very first evidence which shows that sharks use Earth's magnetic fields like a GPS to move across seas and oceans. There are no “street lights” or physical barriers to guide them during their long-distance voyages and migrations. Yet they appear to identify and reach their destinations thousands of kilometres away with precision. Saying that navigating through a three-dimensional ocean is one of the most impressive feats of evolution, the researchers said there is a possibility that sharks use their electrosensory organs to read Earth's magnetic field like a map or atlas.