In a scientific discovery that is almost impossible to wrap your head around, Danish researchers have caught, tagged and released an enormous shark believed to be more than 500 years old.
The 512-year-old Greenland shark, discovered by a team of marine biologists headed up by Julius Nielsen, was a whopping 5.5 m long and is believed to be the oldest living vertebrate ever found.
Nielsen was able to determine the fish's age by its sheer size, since this particular species only grows about 1 cm a year.
Eye lens radiocarbon testing, which has a 95 per cent certainty, also indicated that the shark's impressive age was around the 512-year-old mark.