These Snakes Are So Rare Most People Will Never See One

• At least one snake on this list was declared extinct, only to turn up alive decades later. Rediscovered after years →
• One species vanished from scientific records for over 170 years, until it was finally rediscovered. 170-year disappearance explained →
• A venomous snake survives in a country most people would never associate with snakes at all, with only a few hundred remaining. Orlov’s Viper survival →
• The most bizarre-looking snake on the list isn’t actually that rare, though its appearance is unlike anything most people have ever seen on a snake. See the bizarre nose →

Snakes are common and widespread reptiles, inhabiting most areas of the world, from deserts and forests to wetlands and coral reefs. However, some species are so elusive that even scientists rarely encounter them. Many of these species managed to remain hidden for so long that researchers feared they had gone extinct. Several of these secretive reptiles survive only in tiny, isolated habitats, with some populations numbering in the dozens. A collection of factors contributes to their endangered status, such as habitat destruction and the illegal pet trade. Check out these species that are among the rarest snakes on Earth.

1. Antiguan Racer

Antiguan Racers are thin, nonvenomous snakes native to Antigua and nearby islands in the Caribbean. They were once considered among the rarest snakes in the world after invasive predators like mongooses and rats devastated their population. At one point, fewer than 100 individuals were believed to remain. The species survived mainly on Great Bird Island off Antigua’s coast. Thanks to extensive conservation efforts and predator removal programs, their numbers have slowly rebounded. However, the species is still considered critically endangered.

2. St. Lucian Racer

We once again return to the Caribbean to spotlight the St. Lucian Racer, one of the rarest snakes on Earth. Only a tiny population remains on the island of Saint Lucia. Like the Antiguan racer, the species declined dramatically after mongooses and rats were introduced to the island. These invasive mammals preyed on both adult snakes and eggs. The snake was actually believed to be extinct for decades, until a population was rediscovered on the small island of Maria Major in 1973. Scientists estimate that only a few dozen individuals may remain in the wild today. Conservation groups monitor the species in hopes of preventing total extinction.

3. Trang Blind Snake and Roxane’s Blind Snake

Trang Blind Snake and Roxane’s Blind Snake are tiny burrowing snakes that inhabit Thailand. These small reptiles are possibly the least-understood snakes in the world. Like many blind snakes, they spend most of their lives underground, making them extremely difficult to study. Both species have rarely been observed since their original scientific discovery. Because they are so elusive, scientists know very little about them and believe they only exist in very small populations.

4. Striped Blind Snake

The Striped Blind Snake is yet another blind snake on our list. It too is found in Southeast Asia, including Singapore, Malaysia, Indonesia, and southern Thailand. The species is recognized by its narrow body, eyes hidden under scales, and alternating dark and light stripes. After its initial discovery, this secretive snake went undocumented for more than 170 years, until a dead specimen was rediscovered in Singapore’s Bukit Timah Nature Reserve in 2019. Because it spends most of its life underground or hidden beneath vegetation, sightings are extremely rare. Scientists still know very little about the species.

5. Orlov’s Viper

For this next rare snake, we jump to a completely different spot on the map, one not frequently associated with snakes: Russia. Orlov’s Viper is a venomous snake native to a small region near the Black Sea in Russia. Due to its tiny range and habitat destruction, it is one of the rarest vipers in the world. Researchers estimate that only a few hundred adults are left in the wild. Because its territory is so limited, the snake is considered highly vulnerable to environmental changes.

6. Aruban Rattlesnake

The third Caribbean snake featured on our list is the Aruban Rattlesnake, found only on the island of Aruba. It is one of the rarest rattlesnakes in the world. The species has an extremely limited range within the rocky desert. Human development across the tourist-friendly island and habitat loss have placed pressure on the population, which is estimated at only a few hundred individuals. Introduced goats have also damaged vegetation that supports this snake’s prey species. Conservation programs and breeding programs have helped stabilize the species a bit in recent years.

7. Albany Adder

The Albany Adder is the first African snake on our list. It is a highly elusive venomous snake native to South Africa’s Eastern Cape region. Since its discovery in 1937, the species has rarely been seen in the wild. In fact, many scientists thought it may have gone extinct. However, in 2016, a road-killed specimen confirmed that the snake still survives, although it is critically endangered. Habitat destruction due to urban expansion is a major threat to the adder. Because so few sightings have occurred, researchers still know little about this snake’s behavior.

8. Short-Nosed Sea Snake

The Short-Nosed Sea Snake is a critically endangered sea snake inhabiting reefs near Australia and New Guinea. It prefers shallow coral reefs and spends nearly its entire life in the water. The species experienced major population declines in parts of the Ashmore Reef. It was feared extinct for years before being rediscovered as recently as 2021. It is believed that many factors contribute to its decline, including climate change, failing coral health, and shifting ocean conditions. Today, only a few known populations exist.

Bonus: Malagasy Leaf-Nosed Snake

Let’s hop back to Africa to check out the oddest-looking entry on our list, the Malagasy Leaf-Nosed Snake. While not as rare as the others, you certainly don’t see snakes like this every day. This bizarre-looking reptile is found only on the island of Madagascar. Females feature an unusual extended leaf-shaped nose, while males have an elongated, pointed snout. The species uses camouflage to blend into branches and vegetation, helping it ambush prey and hide from predators. Although mildly venomous, it is generally not considered dangerous to humans. Its strange appearance has made it one of Madagascar’s most recognizable snakes.

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