According to Russell Johnson, when he first auditioned for the role of The Professor, the producers insisted that he would take his shirt off in front of the camera. He declined again and again, and at the end got the part without filming even one shirtless scene.
During the show’s first season, the names of actors Wells and Hale were competing with each other on the show’s opening credits. What does that mean? They appeared one before the other, while their contracts demanded otherwise. The Hale’s name came before Wells, and she did NOT like that. When the show came back for a second season, the producers had to fix that problem if they wanted Wells to come back to work. Actors can be petty sometimes…
During the show’s third season, the writers thought it would be funny to add a pet dinosaur into the mix. Sadly, because of budget reasons, the dinosaur never made it on the show. However, on the animated show “Gilligan’s Planet”, the IS a pet dinosaur. Guess they couldn’t let that idea go away.
The final episode of “Gilligan’s Island” ended with the castaways still on the island, awaiting rescue.
The lagoon you kept seeing on the TV show was not real. It was a small backyard pool that was built on the CBS lot. In 1995 the pool was destroyed and the space was turned into an employee parking lot.