Voyage to the Bottom of the Sea: As the Seaview conducts a marine census, Captain Crane spots a mermaid. He brings her aboard and falls under her spell. A sea creature follows the mermaid and proceeds to cause big trouble on the sub. The problems are compounded when the Seaview is ordered to disarm a nuclear device that has been planted off the coast of California.

Starring:

David Hedison, Del Monroe, Richard Basehart, Robert Dowdell, Terry Becker

Genre:

Adventure, Sci-Fi