A great white shark cruises through Atlantic waters. Reinhard Dirscherl / ullstein bild via Getty Images Long before dinosaurs roamed the Earth between 66 million and 245 million years ago, sharks patrolled the ocean. For more than 400 million years, sharks have lived through multiple mass extinctions in habitats ranging from tropical coral reefs to… Continue reading Fifty Years After ‘Jaws,’ We’ve Learned a Lot About Great Whites | Science