Where Helm's Treasure Hunting Around The World (P. 473) is concerned with possible riches in all kinds of treasure hunts, this devotes itself to underwater finds and has two points of concentration -- the efforts to locate the Monitor off Cape Hatteras and the three expeditions to the galleon lying off Yucatan at Matanceros. Sparked by Robert Marx of the Marines, Blair not only whipped up magazine interest in the Monitor project but also got bitten by the skin-diving bug so that when they were unsuccessful in pinpointing the sunken ship he was ready to join Marx in tropic waters for a search that led to the galleon. The early dives led to a bigger project and that in turn attracted the Mexican skin diving organization which joined them in expanded activities. Since the last work party had a continually harassing spook in attendance (storms, food, sickness, etc.) the rewards of some 1200 ""goodies"" were really earned. Their ""goodies"" led to international correspondence to establish the identity and story of the galleon, which usually brought to light odd bits of history. Plenty of diving and underwater excitement along with the details of the finds, and over 150 photographs make this a good entry for members of the fraternity as well as for anyone after true adventure.