"Experts predict that there are more than 8 million different species on planet earth, with 1 to 2 million of those species ...

Look, here comes a blobfish! This thrilling deep-sea fish was voted the world's ugliest animal by the Ugly Animal Preservation Society. But its jelly-like skin looks much more natural at 900 meters.

From the fearsome piranha and vampire fish to the mighty anaconda, the crocodile, and the candiru, these are among the most terrifying reptiles, insects, spiders, and fish.