When a decaying Russian satellite crashes on the island, the Professor uses a key component for a barometer. With that device, he learns that a massive wave is going to swamp the island. In desperation, the castaways lash their huts together into one structure in order to have any chance to ride the disaster out.
Gilligan

Skipper Jonas Grumby

Thurston Howell III

Lovey Wentworth Howell

Ginger Grant

Professor Roy Hinkley, Jr.

Mary Ann Summers

Dimitri

Ivan

Producer

Cindy Smith
Miss Ainsworth
Dean
Mrs. Devonshire

Mr. Devonshire
Mrs. Fellows

Mr. Fellows
Director
Butler

Tony
Studio Guard
1st Officer

FBI Man #1

Governor's Aide
Judge

Technician
FBI Man #2
Helicopter Pilot
Hawaiian Man
Camera Man
Pom Pom Girl
Pom Pom Girl
Pom Pom Girl
Pom Pom Girl
Reporter (uncredited)

Reporter at Homecoming Parade (uncredited)
