Scientists Discover the World’s Largest Anaconda in the Amazon—And It’s in Danger

What began as a peaceful expedition into the Amazon rainforest turned into a groundbreaking discovery.
A team of scientists from the University of Queensland, led by biologist Professor Bryan Fry, ventured into Ecuador’s remote Baihuaeri Waorani Territory to investigate rumors of the world’s largest anacondas.

The Discovery of a Lifetime
After 10 days of exploring river systems, they found something extraordinary—a new species of northern green anaconda (Eunectes akayima), previously undocumented.
Among them was a female measuring 6.3 meters (20.7 feet) long—possibly the largest snake species alive today.

A Shocking Encounter
While filming with Will Smith for National Geographic’s Pole to Pole, the team witnessed a massive anaconda launch itself from the river—a jaw-dropping display of its raw power and size.

A Species Unlike Any Other
Genetic studies revealed that this anaconda diverged from its southern relative nearly 10 million years ago, with a 5.5% genetic difference—more than double the gap between humans and chimpanzees.

A Fragile Future
But with deforestation and climate change threatening the Amazon, scientists warn that this rare discovery may be short-lived.
The world’s biggest snake could soon face extinction in its vanishing habitat.