Very cool story, but also pretty sad how they were able to make the discovery:

For the study, the team examined 28 sharks that had died after being caught as by-catch in fishing nets. While there is some uncertainty in the age estimates, Nielsen stated that the most likely age for the oldest shark was about 390 years, with a 95 percent certainty range of 272 to 512 years.

Imagine surviving almost 400 years to die in a net just so that some hairless apes (humans) who are going to die relatively soon anyways can make more money that they don’t really need.