The sea wasp is the most venomous member in the jellyfish family.  Its poisoning ability is a lot greater than any snake.  The sea wasp normally is close to the shore; they like to eat shrimp, and shrimp are by the shore.  Sea wasps are so dangerous that bathers die in seconds after being stung. 

Sea wasps are almost transparent, which make it very difficult to see them.  They normally are found by Australia's beaches.  They don't appear in the USA or Europe.  This blob of neurotoxin is so powerfult hat it can kill 50 people. This is known as the most deadly creature.