Amazon Giant Fishing Spider

The Ancylometes is a genus of wandering spiders found in South America. They live near freshwater habitats like ponds, lakes, and rivers. The spiders can also traverse these water bodies, much like water striders, thanks to the hairs on their legs that trap fine air. 

These spiders can also dive into water staying beneath the surface for as long as an hour. They feed on just about anything, including small lizards, and insects. On occasion, they are also known to feast on small fish. The largest of the spider species can reach 20 inches in length with a 4.7-inch leg span. Females are even larger than the males.