Sigmund and the Sea Monsters - Season 1 - Eps 13: Trick or Treat
When Blurp and Slurp find out Sigmund is the grand-prize winner of a contest worth a lot of "clams," they kidnap him while he's out trick-or-treating.
About Sigmund and the Sea Monsters

Title: Sigmund and the Sea Monsters
First Air Date: 1973-09-08
Last Air Date: 1974-11-23
Status: Ended
Rating: 5.7/10 (from 6 votes)
Language: EN
Seasons: 2
Total Episodes: 29
Network: NBC
Genres: Sci-Fi & Fantasy, Kids, Comedy
Production Companies: Sid & Marty Krofft Television Productions, NBC, Vivendi Entertainment
Synopsis
Sigmund and the Sea Monsters was an American children's television series that ran from 1973 to 1975, produced by Sid and Marty Krofft and aired on Saturday mornings. There were 29 episodes spanning two seasons.
Cast

Johnny Whitaker
Johnny Stuart

Scott C. Kolden
Scott Stuart

Rip Taylor
Sheldon the Sea Genie

Billy Barty
Sigmund Ooze

Mary Wickes
Aunt Zelda

Sparky Marcus
Shelby

Pamelyn Ferdin
Peggy

Margaret Hamilton
Mrs. Eddels

Sidney Miller
Sweet Mama Ooze

Fran Ryan
Gertrude