Personally I am scared to death of crocodiles and alligtors, and not just a little afraid, oh no! I'm talking dropping water scared, I'm talking hiking up the yellow sun dress and running around in circles until I knock myself out by running head long into a tree bashing my own skull in scared, I'm talking voice changing without helium around scared.
In India I saw crocks ripping up floaters in the Ganges River, In far south of the boarder they appear to be around quite a bit, they appear to want to eat anything they can grab in Africa, but the largest ones I ever saw were in Australia,.. So not only do you have to be afraid of sharks, sea snakes, but also something that has a head the size of a Ford Pinto.