One of the last things biologists expected to find in the balmy Caribbean Sea was an ancient Greenland shark, a creature known for dwelling far off, in the icy Arctic.
Yet researchers, while temporarily catching and tagging tiger sharks off the coast of Belize, caught a Greenland shark (or potentially a Greenland-shark hybrid), a species that lives for centuries in the deep sea.
Topics Animals
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.
