A 400-year-old shark… still swimming since the 1600s. 🦈❄️ Deep beneath the icy waters of the North Atlantic, scientists have discovered a female Greenland shark estimated to be nearly four centuries old — making her the longest-living vertebrate ever recorded. Using radiocarbon dating on her eye lenses, researchers believe she was born around 1620 — long before electricity, cars, or even the light bulb existed. These mysterious sharks live slow, quiet lives in the cold depths, growing only abou