The official website for the Hai-Furi television anime series announced on Saturday that Luna Haruna will perform the show's ending theme song "Ripple Effect."

The single with Haruna's ending theme will ship in Japan on May 25. Haruna previously performed theme songs for Monogatari Series Second Season, Sword Art Online, Sword Art Online II, Saekano: How to Raise a Boring Girlfriend, and the second season of Fate/Zero. Haruna will also appear at a stage event for the show at Anime Japan 2016 on March 26.

The website also announced on Saturday that the series will premiere on April 9 at midnight on BS11 and Tokyo MX. The series will also air on Tochigi TV, Gunma TV, Sun TV, KBS Kyoto, TV Aichi, TV Hokkaido, and TVQ Kyushu Broadcasting.

The website also revealed on Saturday that Takaaki Suzuki (Girls Und Panzer, Strike Witches, Upotte!! military history adviser) is credited with the original work for the series. Additionally, Graphinica is credited for the show's CG graphics, photography, and editing.

Aniplex began streaming a region-locked commercial on Thursday for the show.

The anime's site describes the story:

"In the sea we live, the sea we protect, and by the sea we go ... Blue Mermaids!" Japan, 100 years after plate subductions caused many other countries to be submerged. To save the remaining countries, the coastal cities that had been built up were launched into the seas, and the seaborne routes between them expanded. With this expansion, a need for personnel that could safeguard the seas arose. Women began to seek employment in this new industry, and soon, the "Blue Mermaids," those who keep the sea safe, began to be a source of admiration for many. The childhood friends Akeno Misaki and Moeka China sought to become Blue Mermaids themselves, and together with others who shared their dream, they enrolled in Yokosuka's Marine High School.

Yuu Nobuta ( Code Geass: Lelouch of the Rebellion R2 , Blade & Soul episode director) is directing the series at Production IMS. Reiko Yoshida (Non Non Biyori, K-ON!, Yowamushi Pedal) is handling series composition, and Atto ( Non Non Biyori ) is drawing more than 30 original character designs for the series. Naoto Nakamura ( A Certain Scientific Railgun , Haganai ) is serving as the character designer and chief animation director. Voice actress group TrySail is performing the opening theme song "High Free Spirits."

Source: MoCa News