Photo of an Island via Vecteezy Islands are typically synonymous with paradise: crystal waters, coral reefs, and tranquil sunsets. But some of them completely defy that postcard image, concealing a real threat beneath the beauty. From deadly wildlife to man-made contamination, here are the places where stepping ashore could be a serious mistake. Here are the five most dangerous islands in the world 1. Ilha da Queimada Grande (Snake Island), Brazil Snake Island via Atlas Obscu