Jellyfish（水母）

In fact, there are just a few kinds of poisonous jellyfish in the world, including the box jellyfish and sea wasp jellyfish. The person stung by the box jellyfish is likely to die as its venom can paralyze the human body, causing the victim to drown. The saladbowl-sized sea wasp jellyfish is even more alarming. It can have up to 60 tentacles, each one 15 feet long, with every tentacle covered in stinging cells that contain enough toxin to kill 60 humans. Based on the statistics from the World Health Organization (WHO), there are 50 people on average killed by jellyfish every year.