Hookworms are a parasitic nematode that live in the soil and hook on to flesh when someone and eats through and flows through the blood stream and then hook on to the intestines and sucks all of the blood out.
Fluke worms are also known as trematodes.They can cause serious health problems to humans. The most common locations for infection are in Africa and they be in america because of food getting imported from these areas.
The Box Jellyfish is the most venemous animal alive. When someone gets stung by one surfing before they can get back to shore they die of heart failure. They are found in northern oceans of Australia.