Kenkō Zenrakei Suieibu Umishō (ケンコー全裸系水泳部 ウミショー) is a Japanese manga series written and illustrated by Mitsuru Hattori. It was serialized in Kodansha's manga magazine Weekly Shōnen Magazine from July 2005 to April 2008, with its chapters collected in nine volumes. A 13-episode anime television series, produced by Artland and directed by Kōichirō Sōtome, was broadcast from July to September 2007.

Plot

Within the Kanagawa prefecture lies the seaside city of Umineko. There, Kaname Okiura, a student in his second year of high school, attends Prefectural Umineko Commercial High School (県立海猫商業高等学校), or Umishō (海商) for short. He is also the manager of the high school swim team though he himself does not know how to swim. In fact, he is afraid of the water stemming from an incident which occurred some years ago. While he was at the beach, he had nearly drowned when a "mermaid" pulled him under the water. He joined the school's swimming club in order to learn how to swim, but the club is filled with weirdos, who do not teach him swimming. One day, a floating house arrives at the shores of Umishō bearing two persons. One of these is a cheerful, sunny, happy-go-lucky girl named Amuro Ninagawa, a transfer student, and the other is her father. Her incredible swimming speed makes her an instant hit with the swimming club, but Kaname is surprised, as she reminds him of the mermaid he saw only once in his early childhood. After her floating house is destroyed during a storm she moves to Kaname's house. The fictional island of Onoshima (緒ノ島), where the series is set, is modeled on the real island of Enoshima in Fujisawa, Kanagawa.

Characters

Media

Manga

Written and illustrated by Mitsuru Hattori, Kenkō Zenrakei Suieibu Umishō was serialized in Kodansha's manga magazine Weekly Shōnen Magazine from July 13, 2005, to April 23, 2008. Kodansha collected its 129 chapters in nine volumes, released from January 17, 2006, to June 17, 2008.

Anime

A 13-episode anime television series produced by Artland, directed by Kōichirō Sōtome and written by Mamiko Ikeda, aired on Tokyo MX, Television Saitama, Chiba TV, TV Aichi and TV Osaka, from July 4 to September 26, 2007. The opening theme is "Dolphin☆Jet" by Ayane, and the ending theme is "Splash Blue ~ Taiyō to Remonēdo" (Splash BLUE〜太陽とレモネード) by Ayumi Murata.

Episodes

Internet radio

An internet radio version of the anime series, Kenkō Zenrakei Suieibu Umishō: Junbi Undō (ケンコー全裸系水泳部 ウミショー 準備運動), was first streamed on the Japanese websites Ōnsen and BEWE from May 16 to June 27, 2007. A continuation, Kenkō Zenrakei Suieibu Umishō: Natsu!! Honban (ケンコー全裸系水泳部 ウミショー 夏!!本番), began streaming on July 4, 2007. The first version of the series featured Hitomi Nabatame, voice actor of Momoko Orizuka, while the continuation featured Nabatame and Aki Toyosaki, voice actor of Amuro Ninagawa.

Video game

A video game developed by 5pb. Inc., titled Umishō (ウミショー), was released for the PlayStation 2 on November 22, 2007.