Wow! Rarely Glimpsed Shark That Lives For Centuries Unexpectedly Surfaces in Caribbean:

Greenland sharks are the longest-living vertebrates on Earth, with an astonishing lifespan of 250 — 500 years … The sharks live thousands of feet underwater in pitch darkness … they grow, move, and age slowly. Their energy-conserving, slow-paced lifestyle is an essential adaptation to the nutrient-scarce deep sea.