The oldest Animal of All
Perhaps being exposed to cold is the answer to live longer. I know that I sleep much better with some cold.
Since that research was published, scientists in Denmark, England, and elsewhere have been trying to figure out why these fish live so long — and what to make of the fact that they seem to avoid cancer, heart disease, and other ailments that go along with aging in humans.
One possible explanation for the sharks’ longevity is that they spend their lives 2,000 meters down, where the water temperature is around 29 degrees Fahrenheit. Extreme cold is associated with slow metabolism and maturation — Greenland sharks don’t reach adulthood until age 150 — as well as long life spans.
https://www.nbcnews.com/mach/science/can-weird-shark-show-us-how-live-centuries-ncna812671
This is a 393-years old Greenland Shark that was located in the Arctic Ocean. It's been wandering the ocean since 1627. It is the oldest living vertebrate known on the planet. Photo by Julius Nielsen.
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