Madagascar - Island of lost treasures
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 Degrave, a mythical ship that sank off the southern coast in 1703.
Reporter Tim Healy goes to Madagascar to find out more.