A new study finds that the Greenland shark, which is about 15 feet long and not a pretty beast under anybody’s definition, lives for about 400 years – plus or minus about 120 years – but who’s counting. Either way, they’re the longest-lived vertebrate by a long shot. These predators only grow by about a centimeter a year, so in the past researchers have had trouble tracking their age. Here’s how they’ve come up with some answers:
http://www.sciencemag.org/news/2016/08/greenland-shark-may-live-400-years-smashing-longevity-record
