Image: via Opencage
1. The Box Jellyfish
The box jellyfish or sea wasp is probably more dangerous than any of the other animals on this list. They’re not technically jellyfish, though they look a lot like them to me, but they are arguably the most venomous creature in the world. Tiny nematocysts on the animal’s tentacles contain the powerful venom and stick to their victims. Of all the creatures on this list that could sting me, I would fear this one the most. Its venom is so painful that there are several reports of people who passed out from the pain but kept screaming long after losing consciousness. They also kill more people per year, mostly in Australia, than any other animal on this list. Since records started being kept in 1884, it’s killed more than 5500 people.