31 Deadliest Animals On The Planet 11. Jellyfish Credit: BBC Jellyfish stings aren’t just itchy and painful; they could also be deadly. Stings from these gelatinous sea creatures account for about 15 to 30 human deaths each year. Prev Next Pages: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32