Megalodon: Facts about the long-gone, giant shark

Earth’s largest known shark, Carcharocles megalodon, ruled the seas for more than 20 million years. The megalodon, which went extinct millions of years ago, was the largest shark ever to prowl the oceans and one of the largest fish on…

Why are these sharks doing the ‘pipi’ dance?

Twenty wriggling tawny sharks (Nebrius ferrugineus) were recently caught on video undulating on a beach on Mer Island, Australia. But why were the sharks shimmying in the sand? Though the sharks were gathered in shallow water, they weren’t stranded or…