
(photo: Hemming1952)
The Greenland Shark has the longest lifespan of any vertebrate (up to 500 years), and doesn’t even reach sexual maturity until they are 150 years old
One theory to explain this long lifespan is that the Greenland shark has a very slow metabolism, an adaptation to the deep, cold waters it inhabits. A NOAA remotely operated vehicle doing a dive off New England encountered a Greenland shark at a depth of 783 meters, but these sharks are known to dive as deep as 2,200 meters. They’re also the only shark that can withstand the cold waters of the Arctic Ocean year-round.








