Living by the sea, protecting the sea, and journeying across the sea…They’re the BLUE MERMAIDS! Because of a shift in tectonic plates around 100 years ago, Japan lost much of its area to submergence. To preserve Japan’s territories, Coastal Cities sprung up, one after the other. Eventually, they became Marine Cities, and along with the expansion of sea-lanes to connect them, the need arose for a sizable staff to protect the seas. At the same time, maritime jobs were becoming more popular among women. Hence, the BLUE MERMAIDS had become every female student’s dream job.
| Visual Effects | Kazuchika Kise | Key Animation |
| Art | Masakazu Obara | Storyboard Artist |
| Art | Kazuo Ogura | Background Designer |
| Sound | Sora Amamiya | Theme Song Performance |
| Camera | Kojiro Hayashi | Director of Photography |
| Art | Atsushi Yokoyama | Background Designer |
| Sound | Shiina Natsukawa | Theme Song Performance |
| Art | Ayako Kono | Storyboard Artist |
| Directing | Ayako Kono | Second Unit Director |
| Sound | Momo Asakura | Theme Song Performance |
| Sound | Shigeo Komori | Original Music Composer |
| Sound | Hiroto Morishita | Sound Director |
| Visual Effects | Hideyuki Motohashi | Key Animation |
| Production | Tomoyuki Ohwada | Producer |
| Visual Effects | Kenji Teraoka | Mechanical Designer |
| Directing | Yuu Nobuta | Series Director |
| Production | Masanori Miyake | Executive Producer |
| Visual Effects | Masayuki Fujita | Animation Director |
| Sound | Yuji Furuya | Sound Effects |
| Visual Effects | Masaru Yoshioka | Key Animation |
| Visual Effects | Wakako Yoshida | Key Animation |
| Writing | Takaaki Suzuki | Screenplay |
| Writing | Takaaki Suzuki | Original Story |
| Art | Hiromichi Ito | Background Designer |
| Visual Effects | Keita Hagio | Animation Director |
| Visual Effects | Keita Hagio | Key Animation |
| Visual Effects | Satoru Koshiishi | Key Animation |
| Visual Effects | Chiharu Sato | Animation Director |
| Visual Effects | Chiharu Sato | Key Animation |
| Art | Chiharu Sato | Storyboard Artist |
| Directing | Chiharu Sato | Second Unit Director |
| Art | Hiroko Tanabe | Background Designer |
| Visual Effects | Shouko Muroyama | Key Animation |
| Visual Effects | Kazuki Ito | Key Animation |
| Visual Effects | Takeshi Matsuda | Animation Director |
| Visual Effects | Takeshi Matsuda | Key Animation |
| Visual Effects | Naoto Nakamura | Character Designer |
| Visual Effects | Naoto Nakamura | Supervising Animation Director |
| Visual Effects | Teruaki Tokumaru | Animation Director |
| Visual Effects | Teruaki Tokumaru | Key Animation |
| Visual Effects | Hisashi Higashijima | Animation Director |
| Art | Hisashi Higashijima | Prop Designer |
| Visual Effects | Hisashi Higashijima | Key Animation |
| Visual Effects | Yuko Yamamoto | Key Animation |
| Visual Effects | Naoko Shokin | Key Animation |
| Art | Ayumi Okano | Assistant Director of Photography |
| Visual Effects | Hitomi Ikeda | Color Designer |
| Production | Shinichiro Kashiwada | Executive Producer |
| Art | Minami Kasuga | Background Designer |
| Writing | Kunihiko Okada | Screenplay |
| Visual Effects | Hiroki Abe | Key Animation |
| Art | Kenta Tsuboi | Background Designer |
| Crew | Noriko Masuko | Special Effects |
| Art | Hideyasu Narita | Art Designer |
| Directing | Jun Nakagawa | Director |
| Art | Jun Nakagawa | Storyboard Artist |
| Directing | Jun Nakagawa | Second Unit Director |
| Visual Effects | Shinichi Yoshikawa | Key Animation |
| Visual Effects | Keisuke Watanabe | Animation Director |
| Visual Effects | Keisuke Watanabe | Key Animation |
| Visual Effects | Michinori Shiga | Animation Director |
| Visual Effects | Michinori Shiga | Key Animation |
| Visual Effects | Saki Hisamatsu | Animation Director |
| Visual Effects | Saki Hisamatsu | Key Animation |
| Art | Ayano Okamoto | Background Designer |
| Production | Manabu Jinguji | Producer |
| Visual Effects | Takahiro Ninagawa | Key Animation |
| Visual Effects | Soichi Honda | Key Animation |
| Visual Effects | Fujio Inose | Key Animation |
| Visual Effects | Eri Sano | Animation Director |
| Visual Effects | Eri Sano | Key Animation |
| Visual Effects | Satoru Yamashita | Key Animation |
| Visual Effects | Suguru Iijima | Key Animation |
| Visual Effects | Hiroko Shigekuni | Key Animation |
| Visual Effects | Mizue Ogawa | Key Animation |
| Visual Effects | Minami Konagai | Animation Director |
| Visual Effects | Minami Konagai | Key Animation |
| Visual Effects | Yuichi Ichihashi | Key Animation |
| Visual Effects | Kim Bo-min | Key Animation |
| Visual Effects | Tomoyuki Munehiro | Key Animation |
| Visual Effects | Yuko Hariba | Key Animation |
| Visual Effects | Ryota Kuratani | Animation Director |
| Visual Effects | Ryota Kuratani | Key Animation |
| Visual Effects | Yu Matsuno | Key Animation |
| Visual Effects | Masaya Sekizaki | Key Animation |
| Visual Effects | Ryosuke Kuwahara | Key Animation |
| Visual Effects | Yoshitaka Sato | Key Animation |
| Visual Effects | Maki Sawai | Key Animation |
| Visual Effects | Yoshio Chizaki | Key Animation |
| Visual Effects | Kotaro Okazaki | Key Animation |
| Visual Effects | Kou Ito | Key Animation |
| Visual Effects | Tatsuro Nagai | Animation Director |
| Visual Effects | Ruriko Watanabe | Key Animation |
| Visual Effects | Hitomi Sato | Key Animation |
| Visual Effects | Hiroo Nagano | Key Animation |
| Visual Effects | Shouta Yoshida | Key Animation |
| Visual Effects | Yu Saito | Key Animation |
| Visual Effects | Sue Ikezu | Key Animation |
| Visual Effects | Hiroshi Saito | Animation Director |
| Visual Effects | Hiroshi Saito | Key Animation |
| Visual Effects | Raku Nishikimi | Animation Director |
| Visual Effects | Raku Nishikimi | Key Animation |
| Art | Shingo Kanai | Art Direction |
| Art | Shingo Kanai | Background Designer |
| Visual Effects | Kyoko Yamaji | Key Animation |
| Production | Jun Katou | Production Supervisor |
| Production | Yuuta Hayashi | Production Assistant |
| Visual Effects | Hisashi Isogawa | Key Animation |
| Visual Effects | Katsushi Suzuki | Key Animation |
| Visual Effects | Koichi Takai | Key Animation |
| Production | Goro Ishida | Producer |
| Visual Effects | Kei Oohashi | Key Animation |
| Sound | Kyohei Akezuma | Foley Artist |
| Art | Chihiro Okawa | Background Designer |
| Visual Effects | Rie Arakawa | Key Animation |
| Editing | Mitsuna Fukasawa | Online Editor |
| Art | Lu Yao | Background Designer |
| Visual Effects | Miko Nakashita | Key Animation |
| Art | Yuan Wenshu | Background Designer |
| Editing | Kasumi Watanabe | Online Editor |
| Visual Effects | Lee Dong-uk | Key Animation |
| Production | Kenshiro Yamada | Production Supervisor |
| Visual Effects | Shiori Tanaka | Key Animation |
| Visual Effects | Mugi Ishikawa | Animation Director |
| Visual Effects | Masami Yamashita | Key Animation |
| Visual Effects | Katsushi Morita | Key Animation |
| Art | Ayu Kiyoki | Background Designer |
| Art | Yuki Umino | Background Designer |
| Editing | Kazuki Kiyohara | Online Editor |
| Sound | Takashi Shibata | Sound Mixer |
| Visual Effects | Ryo Saito | Key Animation |
| Visual Effects | Kim Yeon-hee | Key Animation |
| Visual Effects | Akisa Eguchi | Key Animation |
| Visual Effects | Shohei Sakai | Key Animation |
