White tip sharks have a membrane that cover over their eyes as they go in for the kill, because a predator with no sight doesn't have a lot to look forward too.
Bull shark have develop a unique ability to make it a more efficient killer. Being able to move from salt water to fresh water gives it an advantage over its prey.
How do shark eating habits stack up against those of humans? Find out which species eats more ravenously, which has pickier food choices or which will devour just about anything.
Goodbye shark cage, hello shark tube! Shark expert Chris Fallows tests whether magnetic shark repellent is truly effective on great whites from within a specially designed plastic shark tube in this clip from "Great White Invasion."