Scientists discover why this shark lives for 400 years.
Scientists have mapped the genome of the Greenland shark, which could offer clues to the animal’s extreme longevity. The Greenland shark is not exactly charismatic. Its hulking frame is covered by sandpaper skin. Its fins, stunted, sit awkwardly along its sides. And its eyes, perpetually cloudy, are often host to wormlike parasites that dangle as …