Kenkou Zenrakei Suiei-bu Umishou
Japanese title: ケンコー全裸系水泳部 ウミショー
Alternative titles: Kenkou Zenra-kei Suiei-bu Umishou, Kenkoo Zenra-kei Suiei-bu Umishou, Umisho High School Naked Swimming Club, Umisho
Type: TV
Source: Manga
Episodes: 13
Status: Finished Airing
Aired: Jul 4, 2007 to Sep 26, 2007
Broadcast: Wednesdays at 02:00 (JST)
Duration: 25 min per ep
Rating: PG-13 - Teens 13 or older
Studios: Artland
Producers: Marvelous Entertainment, Pony Canyon, Pony Canyon Enterprises, Geneon Entertainment
Genres: Comedy, Sports, Ecchi
Themes: School
Demographics: Shounen

Kaname Okiura, a student of Prefectoral Umineko Shougyou High ("Umishou" for short), joined the school's swimming club in order to learn how to swim, but the club is filled with weirdos, let alone who can teach him swimming. Then, a sunny, happy-go-lucky girl named Amuro Ninagawa who transferred from Okinawa joined the club. Her extraordinary underwater speed and unorthodox swimming style (plus her personal habit of nude swimming—a powerful magnet to teenage boys) surprised every club member, especially Okiura, because she reminds him of a mermaid-like creature he saw only once in his early childhood.

(Source: ANN)