The Last Frontier: Shipwrecks: Graveyards of the Deep

Graveyard of Ships (3x2)

: 16, 1988

While surveying the sea floor in the Caribbean, the Foundation divers come across a number of relatively new shipwrecks with seemingly no logical explanation for their sinking. That is, until Stoneman and one of his divers make a dangerous deep penetration into one of the wrecks.