Madagascar - island of lost treasures

Audio 20:00

No-one knows how many ships lie on the seabed off the coast of Madagascar. Archeologists, and treasure hunters, have searched the ocean floor around the country for many years, discovering a number of wrecks. But until now, no-one has found the Delgrave, a mythical ship that sank off the southern coast in 1703. Reporter Tim Healy goes to Madagascar to find out more.