- Greenland sharks only grow 1 centimeter a year.
- According to scientist estimates, most pregnant Greenland sharks are at least 150 years old before they have young.
Using radiocarbon dating techniques, scientists have found that a Greenland shark, a 5 meter long predator, may live to be more than 400 years old. This makes the Greenland shark the longest living vertebrate by at least 100 years. Scientists believe that cold water can help these sharks live longer because it may slow down their growth rate and biochemical activity.