The Scooby-Doo/Dynomutt Hour - Season 1 - Eps 25: Scooby-Doo, Where's the Crew?
The gang test the nerves of the ghost of Captain Pescado. The Kelp Monster and The Octopus Monster and go near their treasure, making them very angry.
About The Scooby-Doo/Dynomutt Hour

Title: The Scooby-Doo/Dynomutt Hour
First Air Date: 1976-09-11
Last Air Date: 1976-12-18
Status: Ended
Rating: 7.9/10 (from 167 votes)
Language: EN
Seasons: 2
Total Episodes: 32
Network: ABC
Genres: Animation, Comedy, Family, Kids, Mystery
Production Companies: Hanna-Barbera Productions
Synopsis
The Scooby-Doo/Dynomutt Hour is a 60-minute package show produced by Hanna-Barbera Productions in 1976 for ABC Saturday mornings. It marked the first new installments of the cowardly canine since 1973, and contained the following segments: The Scooby-Doo Show and Dynomutt, Dog Wonder.
Cast

Henry Corden
(voice)

Allan Melvin
Additional Voices (voice)

Casey Kasem
Shaggy Rogers / Additional Voices (voice)

Julie McWhirter
Additional Voices (voice)

Micky Dolenz
Supporting Voices / Additional Voices (voice)

Don Messick
Scooby-Doo / Additional Voices (voice)

Gary Owens
Blue Falcon (voice)

Virginia Gregg
Additional Voices (voice)

Larry McCormick
(voice)

Heather North
Daphne Blake (voice)