Are there snakes in Hawaii? It’s one of the most common questions travelers ask when planning a trip to this island paradise.
The short answer is yes—but there’s no need to worry.
Snakes are extremely rare in Hawaii, and you certainly won’t find them lurking in your hotel room or slithering across the beach while your kids are playing. In fact, the islands are famously one of the few places in the world where land snakes are virtually nonexistent in everyday life.
Strict laws and constant monitoring help keep it that way, as Hawaii works hard to protect its delicate ecosystem from invasive species. Most of the snakes that do exist are either harmless, rarely seen, or live far away from human activity.
So, while the idea of snakes might sound concerning at first, you can relax—your Hawaiian vacation will be far more about sunshine, beaches, and breathtaking scenery than anything that slithers.
The beautiful Crouching Lion hike
There are only two snakes that are considered fairly common in Hawaii—and even they are rarely seen by visitors.
The first is the Island Blind Snake, a tiny, harmless, worm-like snake that lives underground and is often mistaken for an earthworm. The second is the Yellow-bellied Sea Snake, which lives in the open ocean and almost never comes near shore.
The good news? There are no dangerous land snakes, no poisonous spiders of concern, and certainly no large predators like crocodiles or tigers roaming free. In short, Hawaii is about as close to a worry-free tropical paradise as it gets.
Why Are There No Native Snakes in Hawaii?
It might seem surprising that such a lush, tropical environment doesn’t naturally have snakes—but there’s a very good reason.
The Hawaiian Islands are incredibly isolated. Located nearly 2,000 miles from the U.S. mainland, this remote archipelago formed millions of years ago through volcanic activity in the Pacific Ocean. Because of this isolation, only certain plants and animals were able to reach the islands over time—typically by flying, floating, or being carried by the wind.
Snakes, however, are not well-suited for long-distance ocean travel. Unlike birds or insects, they couldn’t naturally make the journey across thousands of miles of open water. As a result, no native snake species ever established themselves in Hawaii.
Final Thought
So while Hawaii does technically have a couple of snake species, they are harmless, elusive, and rarely encountered. The islands remain one of the safest destinations in the world when it comes to wildlife—giving you one less thing to worry about while enjoying your trip.
Beautiful aerial view of spectacular Na Pali coast, Kauai, Hawaii
As they have risen from the ocean, the islands were slowly populated by life – plant seeds, birds and animals. All of them had to fly or swim to the islands or were brought by the wind like seeds. Not many of them survived.
Scientists from the University of California say that for example an invertebrate “successfully colonized Hawaii once every 70,000 years, a plant once in every 100,000 years, and a bird once in every million years.” So getting any new species to an isolated island like Hawaii is a very difficult and hit-and-miss process even for birds that can fly over great distances.
This is clearly much more difficult for land animals such as land snakes, so they came to the Hawaiian Islands in different way – they were brought by humans. Some came by accident, by hitchhiking in the cargo of planes or boats, or deliberately, by being brought to be pets, a part of someone’s snake collection.
Only two snakes managed to survive and spread over the islands and are now fairly common and considered almost native: Brahminy Blind Snake and Yellow-Bellied Sea Snake.
Brahminy Blind Snake
Brahminy Blind Snake (Ramphotyphlops braminus) is a tiny black snake native to Asia and Africa but now common all over the world. It is one of the world’s smallest snakes, never growing more than 20 cm or six inches.
Brahminy blind snake (Ramphotyphlops braminus)
Brahminy snake looks very much like an earthworm, black or dark brown, with head and tail looking pretty much the same. They are almost blind, cannot see fixed images but is sensitive to light.
These type of snakes feed on termites and ants and lives in dark, moist places under logs, humus, and leaves. They can be found most commonly in gardens so it is often called Flowerpot Snake. Brahminy snakes are totally harmless and non-venomous. They have no natural predators – nothing eats them.
You might find it interesting that there are no male Brahminy blind snakes. All are female! They lay eggs that do not have to be fertilized in order to hatch.
It is believed that people brought Brahminy blind snake to Hawaii Islands in the 1930s with the potting soil from the Philippines.
Yellow-Bellied Sea Snake
Yellow-bellied sea snake (Pelamis platurus) is a venomous snake found in tropical oceans all over the world except in the Atlantic Ocean. They are widespread in the tropical parts of the Pacific and Indian Oceans, including Hawaii.
A venemous yellow bellied sea snake washed up on the beach leaves tracks in the wet sand as it tries to slither back to the ocean.
Currents occasionally carry the snakes into temperate waters, but they do not mate or breed there.
The snake’s upper body is black or bluish-brown, and the lower half is yellowish. The yellow tail is paddle-shaped and has a dark bar or spots. It is fairly thin and the average total length is about three feet or one meter.
The Yellow-bellied Sea Snake lives in the open ocean far away from coasts and reefs.
Yellow bellied Sea Snakes have no predators. Their bright color keeps predators away, but it is also possible that the fact that they are highly toxic makes them unpalatable to predators.
Humans are likely to encounter a Yellow-bellied Sea Snake only if an injured or sick animal drifts with the current to the shallow water or to the shore.
They will bite when cornered and their venom, which is highly toxic, can cause paralysis and death if not treated quickly.
The snake is easily recognized because of its bright colors. Although it is highly unlikely, if you see it on the beach or in the water, report it right away to the local authorities. Do not touch it even if it looks dead. They are very fast.
At least, if you are planning on going hiking in Hawaii, you won’t have anything to worry about, however it is always good to stay alert.
What other snakes can be found in Hawaii?
The question: are there snakes in Hawaii becomes more complicated when we take into account snakes that come to the islands due to human stupidity, or by accident. It is justified to call it stupidity considering how dangerous it can be for the islands’ ecosystem. But we will get into that later.
Occasionally, some other snakes are reported on the various Hawaiian Islands. They are always a cause of concern as non-native species have no natural predators in Hawaii and can spread easily and fast.
In our highly mobile world, it is possible for snakes to hitchhike to Hawaii on planes or ships. It is also possible that some snakes that are kept as pets escape or are released into the environment.
Ball python
A pretty, colorful and non-venomous snake, ball python (Python regius) is often kept as a pet in the mainland United States. They are small and cute when they are born. But, as all cute babies, they grow. Adult six feet long ball pythons are not unusual.
Python regius/ Royal python
They eat birds and small mammals. They are native to Africa where they live in grasslands.
Although keeping ball pythons is strictly illegal in Hawaii, people do reckless things and smuggle these beautiful animals for their collections, although they are aware that they can endanger the island environment if the snakes escape into the environment.
And it happens – they escape or the owners release them because they do not want them anymore or for any other reason. They do that with puppies so why not with snakes.
Ball pythons are occasionally spotted roaming on the various Hawaiian Islands. In 2020, a four-foot-long ball python was caught by a hunter on Oahu Island. He brought it alive to the local humane society.
Ball pythons are not venomous, so they are not dangerous to humans. But since they are not native to Hawaii they have no known predators. They can eat all the birds and small critters until there are no more and devastate the ecological balance on the islands.
The problem is that birds are not aware that snakes are dangerous to them because they are not part of their environment. This is particularly dangerous with the snakes that climb trees, and ball pythons do. So, by the time birds figure out that this thing slithering up the tree is a predator, it is too late.
Every animal plays an important role in the web of life. The loss of any of them can totally collapse the whole system. Losing birds to snakes means too many insects. Everything eats something else, so the consequences go up and down the food chain.
Boa Constrictor
Boa constrictors are also kept as pets in the States as well as in many other countries. There are four subspecies of boas of different colors and patterns. All are native to tropical South America but now can be found all over the world.
Emperor boa (Boa constrictor imperator) on a tree.
Boas are very attractive, with very distinctive large patterns which differ among subspecies. They can grow to massive proportions and are not venomous and kill by constricting their prey before swallowing it. This kind of snake likes eating small animals including birds and even small house pets.
In 2011, two boas were seen on a farm in Hawaii. One was nine feet long. In 2013, a three-foot-long boa was seen on a Honolulu road. The same year a five-foot-long boa was killed on the Honolulu Pali Highway. A couple of years later, in 2015, a seven-foot boa was confiscated in Nuuanu by the Department of Agriculture.
Lucrative black market in exotic pets is a part of the problem. As long as people want to keep the big snakes as pets there will be someone supplying them, so new boas and other snakes are being brought to Hawaii. The fact that they are so dangerous to the islands’ ecosystem is not preventing people from keeping them, and losing them in the wild, regardless of the possible consequences to the environment.
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Garter Snake
Garter snake is a harmless, small to medium-sized snake from the genus Thamnophis in the family Colubridae. The snakes are native to North and Central America. They greatly differ in the way they look depending on the subspecies, but generally have stripes along the body and sometimes spots as well.
Garter snakes originally came to Hawaii with a shipment of Christmas trees. In 2004, a shipment of Christmas trees came to the store in Hawaii from an Oregon company carrying a hitchhiker – a 13-inch garter snake. Fortunately, the hitchhiker was caught before it could escape into the wild. It happened again in 2020, but that hitchhiker died in transit.
Garter snakes feed on small animals including fish, bugs and amphibians. They have no known predators in Hawaii and if they managed to get a foothold in Hawaii’s lush environment, these normally harmless animals could have caused a catastrophe.
Brown Tree Snake
The brown tree snake (Boiga irregularis), is a nocturnal snake with a yellow to dark brown back, and with cream or yellow underside. Its head is wider than its body, and its eyes are cat-like with vertical pupils.
Brown Tree Snake
This snake lives generally in trees but it is seen on the ground as well. It may grow to 3 m (9 feet) but most commonly is about 1-2 m (3-6 feet) long.
Like other snakes, they eat small mammals and birds but have a voracious appetite. Their bite is venomous to humans.
Brown tree snake is native to the South Pacific, the Solomon Islands, New Guinea, and Northern Australia. It came to the States in 1940 by being brought to Guam in plane cargo by accident.
This accident shows just how dangerous these snakes are to an isolated ecosystem, where such an animal has no natural predators.
What happened in Guam?
A warning to all ecosystems in which a new predator arrives with no natural predators. Guam has lost a great proportion of its native animal species to extinction.
It is believed that brown tree snake came originally to Guam in the 1950s on cargo ships coming from New Guinea, where it is native.
Since its arrival, Brown tree snakes multiplied over the next several decades and is today a top predator, sitting on top of the food chain
Brown Tree Snake 3 (Boiga irregularis)
The story of the Brown Tree Snake is a powerful example of how one invasive species can completely disrupt an ecosystem.
On islands like Guam, where natural predators and competitors are limited, the brown tree snake has caused devastating consequences. It feeds on birds, reptiles, eggs, and small mammals—even small pets. Over time, this led to the extinction of 9 out of 13 native forest bird species and several lizard species on the island.
The ripple effects didn’t stop there. With bird and lizard populations wiped out—both of which normally help control insects—the insect population surged, impacting agriculture and crop production. Even more surprisingly, these snakes have caused major infrastructure issues by climbing power lines and entering electrical systems, leading to thousands of power outages and millions of dollars in economic losses.
What About Hawaii?
Naturally, this raises concern about other island ecosystems like Hawaii.
Are there brown tree snakes in Hawaii?
Very few—thanks to strict prevention efforts. Authorities work aggressively to detect and eliminate any that arrive. In fact, the only known brown tree snakes in Hawaii are typically those used for training detection dogs.
However, the risk is taken extremely seriously. Experts estimate that if the species were to establish itself in Hawaii, it could cost the economy billions annually and cause ecological damage similar to Guam.
Because of this, Hawaii has some of the strictest laws in the world regarding snakes—owning one can result in heavy fines or even prison time.
Are There Venomous Snakes in Hawaii?
Interestingly, there is one: the Yellow-bellied Sea Snake. However, it lives in open ocean waters and rarely comes near shore unless sick or disoriented. This makes encounters with humans extremely rare.
Final Thoughts
If you’re planning a trip to Hawaii, there’s no real need to worry about snakes. While they technically exist, they are either rare, tightly controlled, or live far from where people typically spend time.
In fact, compared to many other destinations, Hawaii is one of the safest places in the world when it comes to snakes—so you can relax and enjoy its natural beauty without concern.