Well, I don’t know about the rest of them but after 252 episodes, Flipper’s last television show ran on September 1, 1972.
Oops. I was mistaking Bewitched with Flipper. Flipper only lasted 88 episodes until 09/01/1968. Since the bottlenose dolphin has a lifespan of less than 30 years, I can safely say that Flipper only exists in reruns...