Grenada's Bianca C, Martinique's Roraima, British Virgin Island's Rhone, USVI's Wit Shoal, Aruba's Antilla, Bonaire's Windjammer... these are some of the most spectacular historic shipwrecks of the Caribbean. Bursting with colour, underwater fauna adorn these large metallic vessels. The glistening light from the surface transforms these wrecks into sunken cathedrals. On board their sailboat, the diving duo of Cathy Salisbury and Dominique Serafini...