What caused the demise of such a commanding creature is an ongoing investigation, but scientists have discovered a compelling clue. Maybe it was competition with the great white sharks? Or was it climate change? Perhaps both?
Topics Animals
Mark Kaufman
Science Editor
Mark was the science editor at Mashable. After working as a ranger with the National Park Service, he started a reporting career after seeing the extraordinary value in educating people about the happenings on Earth, and beyond.
He's descended 2,500 feet into the ocean depths in search of the sixgill shark, ventured into the halls of top R&D laboratories, and interviewed some of the most fascinating scientists in the world.
