The Secret of Shark Island

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The Secret of Shark Island
Sonny & Cher title card
The New Scooby-Doo Movies
Air date October 28, 1972
Directed by William Hanna
Joseph Barbera
Previous episode

Sandy Duncan's Jekyll and Hyde

Next episode

The Spooky Fog of Juneberry

The Secret of Shark Island is the eighth episode of the first season of The New Scooby-Doo Movies.


Taking a honeymoon, Sonny and Cher meet up with the gang at a run down beach resort that is not what they expected. Along with bad accommodations, there is a giant monster shark that is running around.


Insert details here.

Guest stars

Cast and characters

Actor Character
Don Messick Scooby-Doo
Matt Hildago/Matilda
Casey Kasem Shaggy Rogers
Frank Welker Fred Jones
Heather North Daphne Blake
Nicole Jaffe Velma Dinkley
Sonny Bono Himself
Cher Herself
John Stephenson Milo Meekly
Non-speaking roles
Shark men/sea scavengers


  • Shark men/sea scavengers
  • Milo Meekly


Suspect Motive/reason
Matilda Suspicious manner.


Culprit Motive/reason
Milo Meekly
Sea scavengers as the shark men
To steal gold treasure.



  • Sonny and Cher ended their marriage in 1975. Sonny passed away on February 4, 1998 in a skiing accident.
  • The "Avon lady" referenced by Cher is a door-to-door sales person that sells Avon personal care products.
  • The "Jolly Green Giant" (well giantess) referenced by Sonny is the mascot of a frozen and canned vegetable brand owned by General Mills. The mascot made its first television appearance in 1958.
  • "Pescado Diabolico" means "diabolical fish" in Spanish.

Animation mistakes and/or technical glitches

  • On the brochure the Hideaway Hotel is misspelt "Hideway Hotel".
  • When coming back up for air, Fred says he couldn't hold his breath any longer and Velma agrees, but it comes from Daphne's mouth.
  • A few seconds before Mr Meekly says to Sonny and Cher "Want all of your children in the same room" the bell on his desk disappears.

Inconsistencies/continuity errors and/or goofs/oddities

  • None known.

Home media


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