If you plan on going to Australia in the near future, try to stay away from the jellyfishThe box jellyfish looks harmless but in reality, it's a real bitch. It has up to 60 tentacles measuring 15 feet in length. They each have 5,000 stinging cells and can kill up to 60 humans with their toxins. We know this article is pointless but we just want to point out the jackass holding these two like it's no big deal.