This bowl-sized jellyfish, also known as the sea wasp, is very scary and soft. It has more than 60 tentacles and 24 eyes. Each tentacle is 4.6 meters long and has about 5,000 stinging cells and enough toxins to kill 60 people. It will take the initiative to attack humans. In a relaxed state, the 1 meter-long antenna can "shoot" 3 meters away and wrap around the swimmer. The venom will block people's breathing, leading to cardiac arrest, paralysis of the nervous system and damage to the skin. The box jellyfish is a coelenterate, which mainly lives in the coastal waters of northeast Australia and often floats in the shallow waters off the coast of Queensland. It is considered to be the most toxic creature in the world at present. It can kill people 30 seconds after being stung, and there is no time for rescue. Several victims died in the sea before landing.