40-Million-Year-Old Whale Shocks Scientists – Bigger Than the Blue Whale?| WION Podcast

Scientists have discovered fossils of Perucetus colossus, a 38–40 million‑year‑old whale, in Peru — possibly the heaviest animal to have ever lived. Estimated to weigh up to 340 tonnes, it may surpass even today’s blue whale and the largest dinosaurs in mass. Though shorter in length, its bones are exceptionally dense and heavy, suggesting a massive body. The partial skeleton includes vertebrae, ribs, and a hip bone but lacks cranial remains, leaving its diet and lifestyle a mystery. Its discovery challenges our understanding of marine evolution and reveals just how extreme nature can be.