Flipper's New Adventure (1964)

Synopsis
This 1964 sequel to the 1963 box-office hit Flipper is unnecessarily melodramatic at times, but at least it isn't a cookie-cutter imitation of the original. Suzy the Dolphin returns to the "male" role of the superintelligent Flipper, while Luke Halpin reprises the role of Sandy Ricks. This time, Flipper rescues a British family in the Bahamas, who are being held for ransom. Brian Kelly takes over from the first film's Chuck Connors as Ranger Porter Ricks, a role he'd continue to play in the long-running (1964-67) Flipper TV series. ~ Hal Erickson, All Movie Guide