Man himself.
Mosquito
Banana
Australia's deadliest creature is the Box Jellyfish, a deadly invertebrate which inhabits the tropical and sub-tropical waters off Australia.
Tossup between Werewolf and Minotaur
Chironix Fleckeri (spieces of jellyfish)
Man is probably to answer to both.
Man
A paper clip is not the deadliest weapon in the world. In fact, the weapon that can do the most damaged when used by man is a flamethrower.
The Box Jellyfish the 3rd most deadliest creature on earth in Australia and the barrier reef
Man.
Most of them will eat many living oceanic creature but most of the times the creatures have to be smaller than themselves for the man of war to be able to consume the creature
The most deadliest volcano is Mont Pelee