The top 10 predators that survive in warmer climates include, Box Jellyfish, Crocodiles, Blue-Ringed Octopus, Stonefish, Great White Sharks, Tiger Sharks, Stingrays, Seasnakes, Lionfish and Fire Coral. The Great White Shark is considered the most dangerous shark in the world killing an average of 20 people per year, ranging from 3.5 to 5 metres long and weighing around 1,300 kg. Comparing how many sharks kill people per year, we actually kill a lot more of them.