Exploradores del Mar

A steamboat goes up in flames...and down to the bottom of the sea. A locomotive plunges into a creek...and vanishes into mystery. A German U-boat sends an American troop transport, and eight hundred on board, to a watery grave...on Christmas Eve. Clive Cussler and his crack team of NUMA (National Underwater Marine Agency, a nonprofit organization that searches for historic shipwrecks) volunteer...