Chironex fleckeri

Chironex fleckeri, commonly known as sea wasp, is a well-known, lethal,  venomous species of Box jellyfish. It lives in coastal waters from northern Australia and New Guinea north to the Philippines and Vietnam. Humans can easily be killed by its sting. It is considered the most lethal jellyfish in the world because of the numerous incidents resulting in injury or death to humans.

 References 

 Other websites 

 Distribution of Box Jellyfish in Australia

Category:Jellyfish
Category:Venomous animals