Man O'War
S01E05 - Airdate: 1977-11-01
Runtime: 60 min
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 must battle the jellyfish.
Episode details and rating from TVmaze.