• The 24-36 inch copperhead is responsible for approx. 35 % of all venomous bites in USA. Read More
  • Cottonmouth snakes forage by ambushing their prey, and will avoid humans at all costs. Read More
  • The average death rate from krait bites in Asia is 7 %. It is highly feared in India. Read More
  • The puff adder can strike with lightning speed and most of its victims are from Africa. Read More
  • Cobra's are the largest and deadliest snakes in the world. Read More
  • Known by its triangular head. The venom from the Russel's viper causes renal failure within hours.
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  • The coral snake is not as dangerous as people think and fatalities are uncommon.
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  • The gaboon is a rather calm snake, but deaths from its venom occur fast.
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  • Lancehead snakes accounts for approx. 90 % of all snake envenomations in South America.
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  • The rattlesnakes rattle is composed of scales. Amputations from its bite are common.
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  • The taipan snake has the lowest LD50-value of all snakes. 0.030 mg/kg can kill 50 people.
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  • Bushmasters are the largest vipers and lengths of 6 feet are common.
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  • The black mamba is largest and deadliest snake of Africa. Most, but not all, survive its bite.
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  • Fangs of sea snakes are mostly to short to penetrate human skin. Related to Cobras!
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  • Tiger snakes are roaming around Australia, including islands such as Tasmania.
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  • The death adder can attract prey by wiggling its tail. Its venom is slow to take effect.
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  • The boomslang is long and slender perfectly camouflaged African snake.
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  • Burrowings asps have the longest fangs relative to their head size of any snakes.
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  • The Moorish viper is the largest viper in Africa. It has a zig-zag pattern on its body.
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  • The horned viper is a typical ambusher. Usually, its bite is not deadly.
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  • The night adder is responsible for most venomous snake bites in Africa - it is not deadly.
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  • The most common types of antivenom and how it is produced and used.
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  • Read about people who has survived snake bites and see how bites affected them.
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  • See annotated videos of venomous snakes from around the world.
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  • See annotated images of venomous snakes from around the world.
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  • How did snakes evolve and how is the geological record of snakes.
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  • See a top 5 list of the most venomous snakes in the world.
    Read More


Drawings are ©

Sea Snakes: Fangs Usually too Short for Human Skin

By Anders Nielsen, Ph.d.

Genetically, sea snakes and cobras are rather similar. However, sea snakes are aquatic, unlike their remote terrestrial relatives. When transported ashore, sea snakes are rather uncomfortable, stressing how well adapted they are to the aquatic environment.


It seldom exceeds six feet, and its head is relatively small compared to other species. Its head is flattened to offer as little hydraulic resistance as possible when in its aquatic environment. Sea snakes are divided into two subfamilies, the Laticaudinae and Hydrophiinae.

Members of the former group are amphibious. They are called sea kraits and true sea snakes respectively.


Sea snakes primarily feed on fish, and apparently there is a difference in diet between males and females. A study1 showed that male sea snakes had a more varied diet than female sea snakes. Empirically, the study showed that male sea snakes had an average of 16 different species in their stomachs while females had only six on average.


Sea snakes are confined to relatively temperate aquatic environments like those found in the Tropical Ocean, the Indian Ocean, and the western parts of the Pacific Ocean. One can encounter them in a few places in the Eastern Pacific too. Some sea snake species prefer to live in reefs, while other prefer to live close to vegetation near the shore. As they cannot stay submerged for extended periods, they usually forage close to or at the surface.

Life Cycle

Hydrophiids (the true sea snakes) give live birth to juvenile snakes while submerged. The gestation period ranges from 4-11 months. Parental care is absent in these species, and juvenile snakes are left to forage individually following birth.


Venom from Sea snake is generally more toxic to humans than venom from terrestrial snakes. However, sea snake fangs are only 1 inch long, and sea snakes are relatively inefficient at penetrating human skin in contrast to their terrestrial relatives. Sea snakes are more inclined to bite humans if threatened than terrestrial snakes, but luckily antivenin against all sea snake bites is available.


1Su Y, Fong SC, Tu MC "Food habits of the sea snake, Laticauda semifasciata" Zoological Studies 44 (3). pp. 403-408 (2005)


Dangerous creatures of the sea
Seasnakes by Teresa Zubi

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