News Animals

How Greenland sharks defy aging

Eyes and hearts of these deep-dwelling sharks use biological tricks to keep functioning

A gray Greenland shark swimming in blue water faces the viewer.

The Greenland shark, which can live for centuries, uses a variety of tactics to avoid the typical declining health that comes with age.

dotted zebra/Alamy

By Meghan Rosen

Greenland sharks are spilling new secrets about antiaging.

In the deep, dark waters of the Arctic and North Atlantic, these ghostly giants — which can live for centuries — have hit upon a few tricks for surviving long-term.