D-Day's undersea legacy

On June 6, 1941, hundreds of American, Canadian and British ships delivered troops, supplies, ammunition and vehicles to the coast of France, and ferried the wounded away from the battlefield back to England. Many craft and their crews did not make it home and rest at the bottom of the English Channel. Host Carolyn Beeler speaks with historian Harry Bennett, associate professor at the University of Plymouth and UK shipwreck diver Steve Mortimer. They tell how the sunken ships represent not only history and a final resting place for fallen fighters, but also serve as a place where sea creatures and plants make their homes, building artificial reefs from the wreckage on the ocean floor.