The Lost Continent (1968)
An eclectic group of characters set sail on Captain Lansen’s leaky cargo ship in an attempt to escape their various troubles. When a violent storm strikes, the ship is swept into the Sargasso Sea and the passengers find themselves trapped on an island populated by man-eating seaweed, giant crabs and Spanish conquistadors who believe it’s still the 16th century. monster, red hair, alien life-form, time hole, shark, sea monster, seaweed, lost world, giant crab
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