Voyage to the Bottom of the Sea (1964)

Episode Overview

An extraterrestrial craft descends into the ocean, prompting the Seaview crew to check it out. While they find themselves powerless near the alien vessel, the beings onboard appear amicable, leading Nelson to initiate talks. However, military officials have their own agenda, putting Seaview at risk not only from the aliens but also from potential threats posed by human forces.