The video below shows diver Ocean Ramsey, who seems utterly unfazed by swimming unprotected alongside a ferocious great white shark. She also got some really nice-looking footage. Apparently you can just grab hold of their fin and go for a ride, no big deal.

[youtube http://www.youtube.com/watch?v=d-1xU0VfJ-g&w=584&h=390%5D