Yes, anacondas absolutely still exist. They are alive and thriving across much of tropical South America, and the green anaconda is currently classified as Least Concern on the IUCN Red List, meaning it is not considered at risk of extinction. In fact, scientists discovered an entirely new species of anaconda as recently as 2024.
How Many Species Exist Today
There are at least four recognized species of anaconda, all belonging to the genus Eunectes. The most famous is the green anaconda (Eunectes murinus), the heaviest snake in the world. The yellow anaconda (Eunectes notaeus) is smaller and found further south in Paraguay, Bolivia, and Argentina. Two additional species, the dark-spotted anaconda and the Bolivian anaconda, occupy more limited ranges.
In February 2024, researchers from New Mexico Highlands University published a study revealing a fifth species: the northern green anaconda (Eunectes akayima). For years, scientists had assumed all large green anacondas were a single species. Genetic analysis showed otherwise. The difference between the northern green anaconda and the southern green anaconda is actually larger than the genetic gap between humans and chimpanzees. The discovery reshapes how biologists understand anaconda evolution and suggests these snakes have been diverging for much longer than previously thought.
Where Anacondas Live
Green anacondas are found throughout tropical South America, east of the Andes. Their core range spans the Amazon River basin in Brazil, the Orinoco basin in Colombia, the flooded Llanos grasslands of Venezuela, the Guianas, and the island of Trinidad. They prefer shallow, slow-moving water: streams, rivers, swamps, and seasonally flooded grasslands. These are semiaquatic snakes that spend most of their time in or near water, where their massive bodies move with surprising ease.
Their distribution is vast. Unlike many large predators that have been pushed into shrinking pockets of wilderness, anacondas still occupy an enormous stretch of the continent. The sheer remoteness and density of their wetland habitats have helped buffer them from the kind of range collapse seen in other apex predators.
Size: Separating Fact From Legend
Anacondas have a long history of exaggerated size claims. Stories of snakes exceeding 24 meters (nearly 80 feet) have circulated for centuries, but none have ever been verified. In reality, green anacondas rarely exceed 6.25 meters (about 20 feet), making them significantly shorter than the longest reticulated pythons.
What makes anacondas exceptional is their weight. They are the heaviest snakes on the planet. The heaviest anaconda ever reliably recorded weighed 227 kilograms (500 pounds), measured 8.43 meters long, and had a girth of 1.11 meters, roughly the circumference of a large car tire. To put their bulk in perspective, a 5.2-meter anaconda weighs about the same as a 7.3-meter reticulated python. They are built like aquatic wrestlers: thick, muscular, and dense.
Their Role as Apex Predators
Anacondas sit at the top of their food chain. They are opportunistic hunters that eat a wide variety of prey, and adults are capable of taking down deer, capybara (the world’s largest rodent), caimans, and large birds. They kill by constriction, wrapping their bodies around prey and tightening until the animal can no longer breathe or its circulation stops.
As apex predators in wetland ecosystems, anacondas help regulate populations of mid-level species. Removing them from an ecosystem would likely trigger cascading effects on the animals they prey on and compete with. Their presence is a sign of a healthy, functioning waterway.
Threats They Face
Despite their Least Concern status, anacondas are not free from pressure. Deforestation and resource extraction are likely the greatest threats across their range. Loss of the Cerrado forests in Brazil, oil drilling, mining operations, and hydroelectric dams all degrade or destroy the riparian habitats anacondas depend on. Population trends for the green anaconda remain formally unknown, though the species is described as locally common in many areas.
Human conflict is another persistent issue. In rural communities, large predators like anacondas are sometimes viewed as competitors for prey, threats to livestock, or simply dangerous animals that should be killed on sight. This kind of persecution tends to be localized but can reduce anaconda numbers in areas near human settlements. More recently, ecotourism has introduced a newer form of disturbance. While wildlife tourism can fund conservation, poorly managed operations may stress animals and alter their behavior in sensitive habitats.
The combination of population growth, habitat loss, direct persecution, and increasing human encroachment into remote wetlands means anacondas face real and growing challenges, even if the species as a whole remains widespread. Their survival depends heavily on the continued existence of large, connected tracts of tropical wetland, the very landscapes most vulnerable to development in South America.