Show was a science fiction / adventure series about a "man" who was found unconscious on a beach. "Man" may not be the best term for him, however, as his hands and feet were "webbed" between his fingers and his toes! Doctor Elizabeth Merrill "nursed" him back to health and her agency's computer guessed that he was "The Last Citizen of Atlantis". He then joined her and her lab assistant, to fight any menace to the world (this being the USA!) . The original mini series was five 1 1/2 hour long parts which then became 50 minutes when it was mangled in to a series. This was created in 1977 so all filming and sfx are really tacky by todays standards.
Stars Patrick Duffy of "Dallas" fame and no one else of any consequence.