Scientists Find 476 Whale Fossils in 750-Mile Indian Ocean Necropolis
Updated
Updated · Popular Mechanics · Jun 16
Scientists Find 476 Whale Fossils in 750-Mile Indian Ocean Necropolis
3 articles · Updated · Popular Mechanics · Jun 16
Summary
Across 33 dives in the Diamantina Fracture Zone, researchers logged 476 whale fossils, five carcasses and the deepest known whale fall at 6,700 meters.
The Nature study says the graveyard stretches more than 750 miles across the southeastern Indian Ocean, with densities extrapolated at roughly 760 fossils and seven to eight carcasses per square kilometer.
Most remains belonged to elusive beaked whales, including a 5.3 million-year-old Pterocetus ancestor and a newly identified species, Pterocetus diamantinae.
Researchers said extreme foraging dives may cause fatal exhaustion or decompression sickness, while the zone's V-shaped seafloor could also funnel carcasses into one deep-ocean archive.
The find broadens known limits of whale-fall ecosystems and gives scientists a rare fossil record for tracing beaked whale evolution from the Pliocene to today.
What secrets of evolution does the world's largest, deepest, and oldest whale graveyard hold?
Why did a 750-mile stretch of ocean become a graveyard for millions of whales over 5 million years?
Unveiling the 1,200 km Diamantina Zone Whale Necropolis: The Deepest and Largest Fossil Graveyard on Earth
Overview
In June 2026, an international team of scientists, including Peng and colleagues, announced the discovery of the world's largest and deepest whale necropolis in the Diamantina Zone of the southeastern Indian Ocean. Spanning 1,200 kilometers along the seafloor, this monumental graveyard was uncovered through advanced submersible dives. Scientists identified hundreds of whale fossils, accumulated over at least 5 million years at extreme depths, providing an unprecedented historical record of whale falls. Among the significant findings was the fossilized remains of a previously unknown whale species, making this discovery a unique breakthrough that promises to revolutionize our understanding of deep-sea ecosystems and ancient marine life.