Neil Hammerschlag

It's a mystery where tiger sharks give birth; one team of scientists and shark experts deploy an arsenal of new technology to find out; they need to meet some of the Bahamas' biggest tiger shark mothers face-to-face for it to work.

The world's leading scientists and cinematographers relive 5 extraordinary shark feeding events. From being surrounded at night by 700 grey reek sharks, a 300-strong gathering of blacktip, dusky and bronze sharks feeding on thousands of bait fish, to the spectacular sight of more than 200 blue sharks feeding on the carcass of a seven ton whale; the Great Shark Chow Down is an epic celebration of sharks from around the world.

Shark expert Neil Hammerschlag and a crew of researchers search for an elusive hammerhead shark.