While the Greenland shark (Somniosus microcephalus) may not have the same fame as the great white shark, it holds an impressive distinction: it is the longest-living vertebrate species known to ...

Abigail Adams, wife of the second US president, was born in 1744. It's entirely possible that there are Greenland sharks still living today that were swimming in the North Atlantic Ocean at the time.

As OceanX explained on their Instagram post of the video, the species is related to the Greenland shark which has one of the longest lifespans of any vertebrate and can interbreed with sleeper sharks.

Editor’s note: A version of this story appeared in CNN’s Wonder Theory science newsletter. To get it in your inbox, sign up for free here. “Even though you want to try to, never grow up ...