The EcoExplorers, a young adult adventure club, travel to Andros Island in the Bahamas for a marine biology course at the Rockwood Field Station. Scuba diving and snorkeling are at the top of the agenda, but the adventure quickly takes on a new direction when shady characters are encountered, a mysterious log and treasure manifest are discovered, and lost riches hidden in one of the island's famous blue holes wash the story in intrigue. John Dettor, a local marine archeologist with an agenda of his own, invites the students to pursue the pirate's booty with him "under the guise of a...