Measuring the Greenland shark’s growth rate is challenging because individuals are rarely recaptured. However, one shark tagged in 1936 had only grown 2.3 inches when it reappeared 16 years later.

A Greenland shark that was captured and tagged off Greenland in 1936 was recaptured 16 years later. In that time, it had grown 6 cm longer. If we assume a constant growth rate, that would make a ...

The Greenland shark’s flesh is so toxic that it earned a spot in Guinness World Records 2013, but it can be consumed if it’s prepared properly: It either needs to be boiled with several ...

A Greenland shark's mouth contains 48 to 52 teeth in its upper jaw and 50 to 52 teeth in its lower jaw. The upper teeth are pointed, to help the sharks hold on to larger food, while the lower ...

The Greenland shark lives in one of the most extreme environments. Temperatures frequently fall below zero, yet this shark thrives. It’s predicted that this shark could live to 200 years old ...

The Greenland shark’s genome Greenland sharks grow at an extremely slow rate of less than 1 centimeter (0.4 inch) a year but eventually can reach more than 6 meters (about 20 feet) in length ...

Greenland sharks are massive, growing as long as 24 feet (7.3 metres) and weighing up to 2,645 pounds (1,200 kg). However, they grow at a very slow rate, gaining only about 1 centimetre in length ...