Strapped for cash from his many expensive bids for world domination, Schubert breeds an aggressive genetically-altered jellyfish ten feet across named Poobah, and uses it for blackmail purposes. When the creature attacks a swim meet, Mark...
Aired: Sep 22, 1977A water-breathing human, the sole survivor of an underwater civilization call...
Aired: Oct 13, 1977A human scientist capable of living underwater discovers similar alien life i...
Aired: Oct 18, 1977The Cetacean is called upon to recover a space probe that crashes in the sea,...
Aired: Oct 25, 1977Elizabeth is kidnapped, one of dozens of scientists held prisoner on the isla...
Aired: Nov 1, 1977Water levels are rising all over the Earth. Mr. Schubert offers to stop the d...
Aired: Nov 8, 1977Ships are being damaged by an unknown agent hidden at a depth impossible for ...
Aired: Nov 22, 1977Schubert's tracking of a mysterious power source causes a blackout, at the ce...
Aired: Dec 6, 1977The world is endangered when a vortex opens in the ocean, and Mark must find ...
Aired: Dec 13, 1977Strapped for cash from his many expensive bids for world domination, Schubert...
Aired: Apr 18, 1978While investigating an underwater volcano, Mark is stricken with sudden pain ...
11. Crystal Water, Sudden Death
Aired: Apr 25, 1978The Cetacean finds an underwater forcefield, which shelters a race of air-bre...
Aired: May 2, 1978When a sea quake opens a fissure and Mark investigates, he finds himself in t...
Aired: Jun 6, 1978An enzyme from a rock fossil Mark finds on the sea floor with the properties ...
Main Cast
Guest Starring
Current Status: Ended
Network: NBC
Production Country: United States
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