To keep rising budgets from sinking the show, Batman producers cut costs by using footage from the movie The Endless Summer (1966) for the surfing scenes.
In his book "Back to the Batcave," Adam West calls this perhaps his least favorite episode, referring to Batman and the Joker surfing as a low point in the show's history.
Joker's henchfolk are Undine (the name of a mythical water spirit), Rip Tide and Wipe Out.
The stock footage of the Bat Copter was filmed off Palos Verdes, California, the former home of Marineland of the Pacific.
Barbara Gordon's stylish bathing suit was the height of fashion at the time, although the daring (for the era) bikini was becoming more popular, as evidenced by Undine's space age inspired design.