Sandy is distraught when, having saved Flipper by pulling out a spear, his father insists the dolphin be released. A grateful Flipper, however, returns the favor when Sandy is threatened by sharks.
| Actor | Role |
|---|---|
 Chuck ConnorsPorter Ricks | Porter Ricks |
 Luke HalpinSandy Ricks | Sandy Ricks |
 Connie ScottKim Parker | Kim Parker |
| JJane RoseHettie White | Hettie White |
 Joe HigginsL.C. Porett | L.C. Porett |
| RRobertson WhiteMr. Abrams | Mr. Abrams |
| GGeorge ApplewhiteSheriff Rogers | Sheriff Rogers |
 Kathleen MaguireMartha Ricks | Martha Ricks |