The story revolves around Haruka Nanase, a boy who has always loved to be immersed in water, and to swim in it. Before graduating from elementary school, he participated in a swimming tournament along with his fellow swimming club members, Makoto Tachibana, Nagisa Hazuki, and Rin Matsuoka. After achieving victory, each of the boys went their separate ways. Time passed, and in the middle of their uneventful high school lives Rin appears and challenges Haruka to a match, showing Haruka his overwhelming power. Not wanting it to end like this, Haruka, gathers together Makoto and Nagisa once again and brings a new member named Rei Ryugazaki to create the Iwatobi High School Swimming Club in order to defeat Rin.
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| Title | Air Date | Duration | ||
|---|---|---|---|---|
| Season 1 | Episode 1 | Reunion at the Starting Block! | 2013-07-04 | 25 min |
| Season 1 | Episode 2 | Memories in the Distance! | 2013-07-11 | 25 min |
| Season 1 | Episode 3 | Theoretical Dolphin Kick! | 2013-07-18 | 25 min |
| Season 1 | Episode 4 | Captive Butterfly! | 2013-07-25 | 25 min |
| Season 1 | Episode 5 | Trial in Open Water! | 2013-08-08 | 25 min |
| Season 1 | Episode 6 | The Shock of Not Breathing! | 2013-08-15 | 25 min |
| Season 1 | Episode 7 | One Style Final! | 2013-08-22 | 25 min |
| Season 1 | Episode 8 | Revenge in the Medley! | 2013-08-29 | 25 min |
| Season 1 | Episode 9 | Hesitant Loosen Up! | 2013-09-05 | 25 min |
| Season 1 | Episode 10 | Irritated Heart Rate! | 2013-09-12 | 25 min |
| Season 1 | Episode 11 | Furious All-out! | 2013-09-19 | 25 min |
| Season 1 | Episode 12 | Distant Free! | 2013-09-26 | 25 min |
| Season 2 | Episode 1 | Stormy Dive-Dash! | 2014-07-03 | 25 min |
| Season 2 | Episode 2 | The Stroke of a Chance Encounter! | 2014-07-10 | 25 min |
| Season 2 | Episode 3 | The Butterfly of Farewell! | 2014-07-17 | 25 min |
| Season 2 | Episode 4 | The Somersault Turn of Promise! | 2014-07-24 | 25 min |
| Season 2 | Episode 5 | A Resolution's Heads-Up! | 2014-07-31 | 25 min |
| Season 2 | Episode 6 | Invincible Prime! | 2014-08-07 | 25 min |
| Season 2 | Episode 7 | The Crouching Start of Vindication! | 2014-08-14 | 25 min |
| Season 2 | Episode 8 | The Locomotive of a Twist! | 2014-08-21 | 25 min |
| Season 2 | Episode 9 | The Forming of a Slump! | 2014-08-28 | 25 min |
| Season 2 | Episode 10 | The Six-Beat Kick of Tears! | 2014-09-04 | 25 min |
| Season 2 | Episode 11 | The Open Turn of Destiny! | 2014-09-11 | 25 min |
| Season 2 | Episode 12 | A Swim-Off in a Foreign Land! | 2014-09-18 | 25 min |
| Season 2 | Episode 13 | The Eternal Summer of Beginnings! | 2014-09-25 | 25 min |
| Season 3 | Episode 1 | Sprouting Dive Start! | 2018-07-11 | 25 min |
| Season 3 | Episode 2 | A Promise on a Shooting Star! | 2018-07-18 | 25 min |
| Season 3 | Episode 3 | First Swim in Another Country! | 2018-07-25 | 25 min |
| Season 3 | Episode 4 | Interference of Loss! | 2018-08-01 | 25 min |
| Season 3 | Episode 5 | An Ominous Workout! | 2018-08-08 | 25 min |
| Season 3 | Episode 6 | The Mermaid of the Abyss! | 2018-08-15 | 25 min |
| Season 3 | Episode 7 | A Solitary Medley! | 2018-08-22 | 25 min |
| Season 3 | Episode 8 | Metamorphosis of the Soul! | 2018-08-29 | 25 min |
| Season 3 | Episode 9 | Interval in the Evening Calm! | 2018-09-05 | 25 min |
| Season 3 | Episode 10 | The Grab Start of Hope! | 2018-09-12 | 25 min |
| Season 3 | Episode 11 | Streamline of Unity! | 2018-09-19 | 25 min |
| Season 3 | Episode 12 | Dive to the Future! | 2018-09-26 | 25 min |
| Art | Shingo Kasai | Art Direction |
| Production | Megumi Suzuki | Producer |
| Visual Effects | Ryosuke Shirakawa | Opening/Ending Animation |
| Directing | Eisaku Kawanami | Series Director |
| Visual Effects | Yuji Shibata | 3D Director |
| Production | Masayuki Nishide | Executive Producer |
| Visual Effects | Joji Unoguchi | 3D Artist |
| Visual Effects | Eisaku Kawanami | Opening/Ending Animation |
| Visual Effects | Miku Kadowaki | Opening/Ending Animation |
| Visual Effects | Kayo Hikiyama | Opening/Ending Animation |
| Visual Effects | Sae Sawada | Opening/Ending Animation |
| Crew | Sachie Tsuda | Special Effects |
| Visual Effects | Yoshiji Kigami | Opening/Ending Animation |
| Visual Effects | Seiya Kumano | Opening/Ending Animation |
| Visual Effects | Sana Suzuki | Opening/Ending Animation |
| Visual Effects | Minoru Ota | Opening/Ending Animation |
| Visual Effects | Takuya Yamamura | Opening/Ending Animation |
| Visual Effects | Maiko Hado | Opening/Ending Animation |
| Production | Yoko Kogawa | Executive Producer |
| Visual Effects | Yuko Myouken | Opening/Ending Animation |
| Visual Effects | Chiyoko Ueno | Opening/Ending Animation |
| Writing | Masahiro Yokotani | Series Composition |
| Visual Effects | Nami Iwasaki | Opening/Ending Animation |
| Sound | Eiko Morikawa | Sound Effects |
| Sound | Satoshi Yano | Sound Recordist |
| Sound | Yota Tsuruoka | Sound Director |
| Writing | Koji Oji | Original Story |
| Production | Shinichi Nakamura | Producer |
| Production | Shigeru Saito | Producer |
| Visual Effects | Futoshi Nishiya | Supervising Animation Director |
| Camera | Kazuya Takao | Director of Photography |
| Visual Effects | Hiroyuki Takahashi | Opening/Ending Animation |
| Visual Effects | Yuka Yoneda | Color Designer |
| Sound | Tatsuya Kato | Original Music Composer |
| Production | Yoko Hatta | Executive Producer |
| Production | Masayuki Nishide | Producer |
| Editing | Kengo Shigemura | Editor |
| Visual Effects | Futoshi Nishiya | Character Designer |
| Editing | Gen Itakura | Online Editor |
| Production | Shunji Inoue | Executive Producer |
| Art | Seiichi Akitake | Prop Designer |
| Production | Shinichiro Hatta | Producer |
| Sound | Shigeru Saito | Music Producer |
| Visual Effects | Tatsuya Satou | Opening/Ending Animation |
| Visual Effects | Shinpei Sawa | Opening/Ending Animation |
| Visual Effects | Ryouhei Muta | Opening/Ending Animation |
| Visual Effects | Kunihiro Hane | Opening/Ending Animation |
