Teens Hal and Roger Hunt stay in Undersea City, 200' below Australia's Great Barrier Reef, to find rare species for dad's Long Island collection, and ways to produce food from sea. They face coral cuts, man-eating sharks, killer whales, giant squid, other dangers. When they find sunken treasure, villain Kaggs starts a landslide, proves deadlier than sea creatures.
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Diving adventure
Teens Hal and Roger Hunt stay in Undersea City, 200' below Australia's Great Barrier Reef, to find rare species for dad's Long Island collection, and ways to produce food from sea. They face coral cuts, man-eating sharks, killer whales, giant squid, other dangers. When they find sunken treasure, villain Kaggs starts a landslide, proves deadlier than sea creatures.
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