7 Fish That Live INSANELY Long – Greenland Shark Up to 500 Years Old | Worlds Biggest

Discover the Worlds Biggest secrets of longevity beneath the waves—fish that have outlived empires, wars, and entire generations. Some of these “living fossils” were already swimming in darkness before America was born, and one may date back to the European Renaissance. In this Worlds Biggest documentary-style countdown, we reveal the 7 longest-living fish on Earth—from the Australian Lungfish “Granddad” to the mysterious Greenland Shark—and the science (ear-bone growth rings and radiocarbon dating) that helps researchers estimate their ages. If you love ocean mysteries, deep-sea legends, and unbelievable biology, you’re in the right place. Stay to the end for the Worlds Biggest jaw-dropper at #1—and tell me in the comments which creature shocked you most. ✅ What you’ll learn: • Which freshwater fish can reach nearly 150 years • Why some century-old fish show surprisingly strong immunity • The deep-sea species that rewrites what “aging” means • How scientists prove these ages with real methods 00:00 The Worlds Biggest time travelers under the ocean 00:28 Top 7 – Top 6 Australian Lungfish & Bigmouth Buffalo 02:56 Top 5 – Top 4 Lake Sturgeon & Shortraker Rockfish 04:49 Top 3 – Top 2 Rougheye Rockfish & Orange Roughy 07:03 Top 1 Greenland Shark + final takeaway 👍 Like, subscribe, and share if you want more Worlds Biggest documentary countdowns every week. Series: World's Biggest:    • World's Biggest   Subscribe to Biggest Things to discover the biggest things in the world:    / @biggestthings   Disclaimer: This is compilation content. Some materials may be used under Fair Use for commentary, education, criticism, research, and informational purposes. All rights belong to their respective owners. If you are a copyright owner and have any concerns, please contact us for proper credit or removal. #WorldsBiggest #BiggestThings #Top7 #WorldRecords #AmazingFacts