一个神秘的夜晚，海底巨浪把奇异的生物麦克·哈克斯（帕特里克·杜菲 饰）送到岸上。当医学界视之为死亡而无能为力时，海洋学家伊莉沙白·玛丽博士（贝琳达·蒙哥玛丽 饰）把他放回海洋，才使他得以复活。 至于他从哪里来，要到哪里去，他自己不知道，电脑也只能猜测。麦克接受了一连串的试验，以测验他的速度、灵敏度和力量。虽然麦克获准返回海洋的世界，但他决定留下来帮助玛丽博士等人探索海洋，同时也学习有关人类的世界… 本片于1980年引进中国，为中国首部引进的大型科幻片，收视效果惊人。
编剧: Tom Greene
播出日期: 1977-09-22
运行时间: 49 min
概述: Schubert threatens to cause worldwide flooding by using powerful microwaves to melt Earth's polar ice caps, unless the government turns Mark Harris over to him.
编剧: Alan Caillou
播出日期: 1977-10-13
运行时间: 49 min
概述: When a multimillion-dollar underwater probe malfunctions and begins attacking any ship that travels near it, Mark must reason with its highly advanced brain and convince it to stop.
编剧: Herman Miller
播出日期: 1977-10-18
运行时间: 48 min
概述: Mark, investigating a power outage, discovers a centuries-old hawk statue from the legendary civilization of Mu. The statue, when used properly, can remove the power from a large area. Schubert discovers the power of the hawk statue and Mark must prevent him from taking it.
编剧: Michael I. Wagner
播出日期: 1977-10-25
运行时间: 48 min
概述: The oceans are leaking through a fissure in the ocean floor. A con-man named Muldoon agrees to guide Mark through the fissure to investigate. However, Mark is unaware either that giants inhabit the other side of the fissure or that Muldoon has already stolen gold from one of them.
编剧: Larry Alexander
播出日期: 1977-11-01
运行时间: 48 min
概述: Using his genetic scientists, Schubert produces a giant jellyfish which he intends to release unless his extortion demands are met.
编剧: Herman Miller
播出日期: 1977-11-08
运行时间: 48 min
概述: Mark is somehow linked with a man named Billy, existing in a wild west town, who appears to be his twin. Investigating, Mark arrives in the town and discovers that Billy once had the same webbing as Mark, but also that he has had it removed.
编剧: Larry Alexander
播出日期: 1977-11-22
运行时间: 48 min
概述: Schubert attempts to make a satellite weapon to knock out Earth's communications. However, to power the weapon, he needs the energy crystals protected by a force field under the ocean. The crystals actually power the force field that protects an underwater world inhabited by a humanoid society.
编剧: Stephen Kandel
播出日期: 1977-12-06
运行时间: 48 min
概述: An underwater landslide transports Mark to Verona, Italy...in the days of Romeo and Juliet.
编剧: Stephen Kandel
播出日期: 1977-12-13
运行时间: 48 min
概述: C. W. develops a Jekyll-and-Hyde personality after swallowing a mysterious liquid.
编剧: Peter Allan Fields
播出日期: 1978-04-18
运行时间: 48 min
概述: Mark re-encounters Muldoon, his nemesis from "Giant," who is using a sea monster to make island natives sacrifice young girls to him.
编剧: Shimon Wincelberg
播出日期: 1978-04-25
运行时间: 48 min
概述: An impish little man enters an underwater station and causes the crew to become irrational simply by touching them. After three crewmen die, the F.F.O.R. hears Duke, the last crewman, talking over the radio in a childish manner and investigates. Mark swims over and brings Duke over to the Cetacean, not knowing the imp has stowed aboard.
编剧: Michael I. Wagner
播出日期: 1978-05-02
运行时间: 90 min
概述: While investigating the mysterious loss of three ships in one part of the ocean, Mark and the crew of the Cetacean encounter a submarine operated by a modern-day pirate. The pirate has captured a mermaid that can produce a hypnotic siren song, which mesmerizes anyone who hears it, even Mark.
编剧: Larry Alexander
播出日期: 1978-06-06
运行时间: 90 min
概述: Mark goes undercover to investigate members of a carnival planning to break into a museum. The only way to break into the museum is through an underwater tunnel, through which only Mark can swim. When he is approached, he refuses. The owner of the carnival is then kidnapped and threatened unless Mark helps.
