Hier ein paar Infos zu Flipper von einer amerikanischen Website zu Luke Halpin:
[www.cpps90.com]

Back to "Flipper", whenever you see an episode, the opening titles can tell you which season the episode is from. The first season is marked most clearly by where the titles say, "and Flipper", showing the dolphin alone. The later seasons used a shot of the 3 Rickses with Flipper. Variations in the first season: the first four episodes use cast shots taken during the filming of the pilot. The rest of the season, and the second season, use later shots (these include the shot of Tommy Norden with the puppy in his face). Five episodes of the first season also feature "Guest star Andy Devine".

The titles for the second season changed just by changing the "and Flipper" to include the family; except, the first five episodes of the season featured a totally different version of the Flipper theme, sung by swingin' Frankie Randall. I think there was a conscious effort at the start of the new season to heighten the drama (the criminal Burt Reynolds strands the family on an island, and ends up threatening Sandy at gunpoint; Flipper is endangered by an old floating mine; and is deafened and may have to be put to sleep after an underwater explosion), and to broaden the appeal more to general audiences (having been promoted originally in 1964 as "for children", which even such juvenile fare as "The Munsters" and "Gilligan's Island" had not been!); hence, the new theme, and a new "love interest" for Porter, Ulla Norstrand. The cast shots of Luke and Tommy, carried over from the first season, finally had their source revealed, when the scene they were taken from was used in the opening scene of episode 40, "Dolphin Patrol". That "new scene" of that episode was actually a year old!

The third season is marked by new cast pictures of "the Rickses". That year also introduced the airplane into the stories, and it was used to show each cast member in a different mode of transport: Brian Kelly in the plane, Luke Halpin in the "launch", and Tommy Norden in the "skiff". The shot of the family with Flipper was carried over.