Trivia

Although Luke Halpin was 16 when this film was made, it is likely that his character Sandy Ricks was supposed to be 13 or 14.

On March 30, 1964 Luke Halpin appeared as a celebrity contestant on the long running show "To Tell The Truth" alongside two others young men pretending to be him. The four panelists ask questions of the three contestants to try and find the real Luke Halpin. Luke starred with the dolphin 'Mitzi' in the original "Flipper" movie and with 'Suzie' in "Flipper's New Adventure". He was asked which of the two dolphins he preferred and he answered Mitzi because she was more affectionate.

Last cinema film of Tom Helmore.

The final scene shows Flipper being treated by vets at the Miami Seaquarium after being stabbed by Gil Bates the escaped convict. The head vet doing the treatment is actually Flipper scriptwriter and producer Ricou Browning and the youngest assistant is Ric O'Barry who was at the time one of the dolphin trainers. O'Barry went on to become a dolphins rights advocate criticizing the way the Miami Seaquarium penned the dolphins in extended captivity.

In Producer Ivan Tors' book "My Life in the Wild" he tells how they got the dolphin star of the movie (Suzy) to attack the pirate underwater when dolphins are naturally non violent. Even though one of the directors Ricou Browning was close to Suzy, them having worked together for many months, when Ricou put on the pirate's stripped shirt and brandished a rubber knife in her direction, she realized what was expected and began to swim aggressively at Ricou swimming back and forth in close passes just as is captured in that scene in the movie.