Inland taipans are the most venomous snakes in the world and are found in central eastern Australia. One bite from the creature is thought to possess enough lethality to kill 100 adult humans.
Saw-scaled vipers live in dry regions of Africa and Asia. They are often found in populated areas. Professor Hayes says they cause more deaths than any other species of snake.
Eastern brown snake
Eastern brown snakes are native to eastern and central Australia, as well as southern New Guinea. They are considered to be the second most venomous snakes in the world.
This highly venomous pit viper species is found in an area which extends from southern Mexico to northern South America. They are known for being irritable and fast-moving.
Coastal taipans are native to coastal areas of northern and eastern Australia and the island of New Guinea. Most toxicological studies find them to be the third most venomous land snakes in the world.
Boomslangs, native to sub-Saharan Africa, are highly venomous. The zoologist Karl Schmidt died after being bitten by a juvenile boomslang. He had doubted it could produce a fatal dose of venom.
Black mambas, native to parts of sub-Saharan Africa, commonly grow as long as 10ft and are the second longest venomous snake after the king cobra.
There are around 69 species of sea snakes and the majority are highly venomous. They are found in warm coastal waters from the Indian Ocean to the Pacific.