Description
One of a series of adventures featuring Hal and Roger Hunt. The boys are on board "Lively Lady", studying submarine life and searching for the treasure of the "Santa Cruz", sunk three centuries ago. But also on board is an unscrupulous former school-mate of Hal's who is after the treasure himself.
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Hal and Roger Hunt dive into danger when they join the Oceanographic Institute as part of an underwater operation in the South Seas. And it's sink or swim for the intrepid brothers when their aquatic adventures bring them face to face with a foe even more deadly than the sea creatures of the deep.
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