6. Great White Shark
Though most of the Great White Shark’s danger has come from inflated fear caused by Jaws and Shark Week, the Great White Shark does have notoriously bad eyesight.
People who are swimming or on a surfboard can often look like seals, which are the natural prey of the Great White. While a Great White might take a bite, humans are usually too bony for their tastes – the danger comes in when they let go and leave you to bleed out in the ocean.