A 400-Year-Old Guardian of the Deep ❄️🦈 In the icy waters of the Arctic, scientists have discovered a Greenland shark believed to be nearly 400 years old — making her one of the oldest known living vertebrates on Earth. These ancient sharks grow at an incredibly slow pace, adding only about a centimeter each year, and drift through the deep in near silence. This particular female is thought to have been born in the early 1600s, long before electricity, airplanes, or modern nations as we know th