(Opening credits without Belinda Montgomery)
The series stars Patrick Duffy as an amnesiac man given the name of Mark Harris, believed to be the only surviving citizen of the lost civilization of Atlantis. He possesses exceptional abilities, including the ability to breathe underwater and withstand extreme depth pressures, and superhuman strength. His hands and feet are webbed, his eyes are unusually sensitive to light, and he swims using his arms and legs in a fashion suggestive of an underwater butterfly stroke or dolphin kick. Following his discovery, he is recruited by the Foundation for Oceanic Research, a governmental agency that conducts top secret research and explores the depths of the ocean in a sophisticated submarine called the Cetacean.
