PHOTOS: A Journey with Sharks
An underwater voyage redeems sharks, and exposes the darker side of humanity.
Sharks: From Predator to Prey
The distinctive head of the hammerhead shark remains a mystery. Some scientists think it helps them sense prey and navigate the water.
"There's a lot we can learn from sharks," Stewart said on his Web site. "They are a beautiful example of a creature that's managed to live in balance on earth — and survive."
(SHARKWATER Productions)
