The Delinquents Have Changed into Swimsuits

is episode 15 of the Beelzebub anime.

This episode was originally to be aired as episode 11 on March 20, 2011, but following the 2011 Tōhoku earthquake and tsunami, the anime had been skipped for two weeks because of the provocative nature of the series. This episode had been postponed to become episode 15, while the original episode 10 had been postponed to become episode 13. The two episodes that were to follow these two were aired on their regularly scheduled times. As a result, these two episodes were aired first and became episodes 10 and 11. The pre-opening sequence for this episode had been modified to remove scenes suggesting the disaster.

Next episode preview
Furuichi enthusiastically greets the viewers as summer vacation is coming. Excited, he introduces them to next week's adventure love story on a tropical island. Oga and Beelzebub's cheer kills his excitement as he realizes he is actually being sent to a public pool instead and wonders why. After Oga introduces the next episode, Furuichi tries to regain hope with the thought of seeing Hilda and Queen Kunieda in a swimsuit and maybe having wardrobe malfunctions. Oga then suggests he look at Beelzebub, to which Furuichi is turned off at Beelzebub already exposing himself.