The Belcher’s Sea Snake: The World’s Most Venomous Snake

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The Belcher’s sea snake is one of the most poisonous snakes found on earth. This sea snake can be found along the coasts of both the Indian and Pacific Oceans. It is also known to inhabit an area of a few islands off the east coast of Australia.

It is found in large colonies on some islands. Belcher’s sea snake is popular among fishermen. Generally, the life span of a Belcher’s sea snake is a bit more than 25 years. It is believed that their venom may possess anti-epileptic properties.

“Faint-banded” sea snake refers to the pale coloration along their sides, which may change from a darker to lighter coloration when they feel threatened.

What is a Sea Snake

A sea snake is an elongated, cylindrical, prehensile snake, whose body is occupied by an elongated head on which a bony crest covers its teeth and upper jaw. Its head is so large and heavy that it is supported by the muscles of the neck and body.

Adults of Hydrophis belcheri typically measure between 0.5 to 1 meter (about 20–40 inches) in length. The short tail makes them extremely fast swimmers, allowing them to chase fish through open water.

Their body is covered in tiny scales that make them nearly impervious to both the sun and cold water, making them ideal for cold water habitats, such as the Arctic.

And yet, despite this defense, they are not guaranteed to survive in the frozen waters of the Arctic and sub-Arctic.

Quick Facts

Age Small adult Belcher’s sea snakes range in age from 2 to 7 years, with both sexes typically reaching sexual maturity between 3 and 5 years of age. The average lifespan is typically 6 to 10 years for a small adult.

Size Belcher’s sea snakes can reach lengths of up to 6 feet in an adult, though most tend to be around 4.3 to 5 feet. Razor-like teeth This snake is most often found to be black or dark brown in color with a copper-colored band down the center of its back.

The venom of the Belcher’s Sea Snake This species of sea snake is known to have highly concentrated doses of neurotoxic and sometimes hemotoxic venom.

In a small percentage of animals, hemotoxic venom can result in a form of lymphocytic encephalopathy.

The Belcher’s Sea Snake Information

Size: Belcher’s sea snake is the second largest of the sea snakes, coming in about 8-12 inches (20 – 30 centimeters) long and a maximum weight of just a pound (450 grams).

Belcher’s sea snake is the second largest of the sea snakes, coming in about 8-12 inches (20 – 30 centimeters) long and a maximum weight of just a pound (450 grams). Snake Bite or Maul? Unfortunately, the sea snakes only have 3 dangerous venom sacs.

This means that you don’t need to worry about encountering them while you are swimming. Unfortunately, the sea snakes only have 3 dangerous venom sacs. This means that you don’t need to worry about encountering them while you are swimming. Sighting?

The Belcher’s Sea Snake Interesting Facts

It is an indigenous species that is found in the Indo-Pacific Ocean, especially in the East China Sea. The Belcher’s Sea Snake is known to be fast-moving, and its average size is not more than 4 feet in length.

In order to develop venom, the Belcher’s Sea Snake uses a protein that is unique to it. The size of the shell of this Snake is usually 3 inches or less. It is harmless to humans unless provoked by touch or being bitten.

The Belcher’s Sea Snake also possesses a method of killing prey by crushing it between its jaws and then swallowing the prey whole.

The blue color of the Belcher’s Sea Snake is due to its iridescent scales that are highly modified into diamonds. The Belcher’s Sea Snake is venomous and therefore should be handled carefully.

What is a Belcher’s Sea Snake?

The Belcher’s Sea Snake is a small-to-medium-sized species of elapid sea snake, growing to a maximum length of 50 cm (20 inches).

“Seldom seen” typically applies here, but the Belcher’s Sea Snake is known to be found on the warm, shallow continental shelf in the eastern and central Pacific Ocean.

These Snakes are relatively common in both Hawaii and the Galapagos Islands, where they are generally common and abundant. The type locality given is “Yellowstone National Park, Teton Range, North America”.

The specific epithet honors the American malacologist Alfred W. Belcher (1870-1929), who was responsible for the description of more than 100 species of marine mollusks.


The faint-banded sea snake grows to about 5.5 meters in length. The species is yellowish-green to brown in color, with dark crossbars that usually run down its back.

Diet and venom The faint-banded sea snake is not commonly found in the wild and is more often found on or around boats, which is why it has earned its common name of the “sea snake” when spotted at the surface of the water.

these snakes are so rarely encountered that they are not regarded as an urgent threat to human health. However, they are still extremely venomous and will kill a human in around 15 minutes, depending on how much venom is ingested.


The Belcher’s sea snake is a non-migratory, Indo-Pacific oceanic sea snake. It is not found in freshwater. Diet this snake preys upon crustaceans, such as crabs, lobster, and shrimps, as well as marine fish and fishes.

Subspecies There are two subspecies of the Belcher’s sea snake: Cynoscope belchari belcheri — Commonly known as Belcher’s sea snake. Cynoscope benthicola belcheri — Known to occur in shallow, sheltered reefs off of southern Australia.

Distribution The Belcher’s sea snake is found from eastern Australia to the central Pacific Ocean. The behavior of this snake is ovoviviparous, meaning it lays eggs and produces live young instead of laying eggs inside a female.


Belcher’s sea snakes typically only bite prey with their lower fangs or a small mid-dorsal scalpel. In the rare cases that they bite a vertebrate, they inject their venom through the mid-dorsal scalpel.

Unlike most snakes, this snake doesn’t have a venom gland and is capable of injecting only its venom via a small scalpel at the base of the snake’s lower jaw. Like any elapid snake, this snake is highly venomous and contains deadly neurotoxins.

However, the Belcher’s sea snake is distinguished from other elapids by a unique arrangement of the neurotoxic venom proteins that are responsible for inflicting the maximum venom damage and are responsible for inducing unconsciousness and death.

Interesting Facts

Due to its venomous nature, This snake is commonly known as the faint-banded sea snake or Belcher’s sea snake. It is found in tropical and subtropical waters of the Indian and Pacific Oceans, ranging from East Africa to Western Australia.

This snake’s venom is the second most toxic in the world after the Congo viper. Belcher’s sea snakes are the only venomous sea snakes, as a result of its genus.


In my opinion, this is the scariest snake I’ve ever encountered! 3. Leafy Sea Dragon (Argonauta fasciata): A Troubled and Dangerous Tiger Snail (Oceanonauta) Mauritanie, March 2016 Mauritanie, March 2016 Argentina – European Invasion of the Giant Lionfish (Pterois volitans): An Otherworldly Decimating Elite Predator Newfoundland, Canada, 2012 Canada, 2012 Penang, Malaysia, 2006 Newfoundland, Canada, 2012 United Kingdom, 2011 Alyssa Croft SeaTurtle University, Sea Turtle Rescue Association The threats and challenges facing sea turtles in British Columbia are extraordinary.

The largest sea turtle nesting region in the world, the Sunshine Coast Sea Turtle (Caretta caretta) is extremely popular among visitors from all over the world.

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