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.
 | Season 1 Episode 1 Reunion at the Starting Block! Air Date: 2013-07-04 Duration: 25 min |
| Season 1 Episode 2 Memories in the Distance! Air Date: 2013-07-11 Duration: 25 min |
| Season 1 Episode 3 Theoretical Dolphin Kick! Air Date: 2013-07-18 Duration: 25 min |
| Season 1 Episode 4 Captive Butterfly! Air Date: 2013-07-25 Duration: 25 min |
| Season 1 Episode 5 Trial in Open Water! Air Date: 2013-08-08 Duration: 25 min |
| Season 1 Episode 6 The Shock of Not Breathing! Air Date: 2013-08-15 Duration: 25 min |
| Season 1 Episode 7 One Style Final! Air Date: 2013-08-22 Duration: 25 min |
| Season 1 Episode 8 Revenge in the Medley! Air Date: 2013-08-29 Duration: 25 min |
| Season 1 Episode 9 Hesitant Loosen Up! Air Date: 2013-09-05 Duration: 25 min |
| Season 1 Episode 10 Irritated Heart Rate! Air Date: 2013-09-12 Duration: 25 min |
| Season 1 Episode 11 Furious All-out! Air Date: 2013-09-19 Duration: 25 min |
| Season 1 Episode 12 Distant Free! Air Date: 2013-09-26 Duration: 25 min |
| Season 2 Episode 1 Stormy Dive-Dash! Air Date: 2014-07-03 Duration: 25 min |
| Season 2 Episode 2 The Stroke of a Chance Encounter! Air Date: 2014-07-10 Duration: 25 min |
| Season 2 Episode 3 The Butterfly of Farewell! Air Date: 2014-07-17 Duration: 25 min |
| Season 2 Episode 4 The Somersault Turn of Promise! Air Date: 2014-07-24 Duration: 25 min |
| Season 2 Episode 5 A Resolution's Heads-Up! Air Date: 2014-07-31 Duration: 25 min |
| Season 2 Episode 6 Invincible Prime! Air Date: 2014-08-07 Duration: 25 min |
| Season 2 Episode 7 The Crouching Start of Vindication! Air Date: 2014-08-14 Duration: 25 min |
| Season 2 Episode 8 The Locomotive of a Twist! Air Date: 2014-08-21 Duration: 25 min |
| Season 2 Episode 9 The Forming of a Slump! Air Date: 2014-08-28 Duration: 25 min |
| Season 2 Episode 10 The Six-Beat Kick of Tears! Air Date: 2014-09-04 Duration: 25 min |
| Season 2 Episode 11 The Open Turn of Destiny! Air Date: 2014-09-11 Duration: 25 min |
| Season 2 Episode 12 A Swim-Off in a Foreign Land! Air Date: 2014-09-18 Duration: 25 min |
| Season 2 Episode 13 The Eternal Summer of Beginnings! Air Date: 2014-09-25 Duration: 25 min |
| Season 3 Episode 1 Sprouting Dive Start! Air Date: 2018-07-11 Duration: 25 min |
| Season 3 Episode 2 A Promise on a Shooting Star! Air Date: 2018-07-18 Duration: 25 min |
| Season 3 Episode 3 First Swim in Another Country! Air Date: 2018-07-25 Duration: 25 min |
| Season 3 Episode 4 Interference of Loss! Air Date: 2018-08-01 Duration: 25 min |
| Season 3 Episode 5 An Ominous Workout! Air Date: 2018-08-08 Duration: 25 min |
| Season 3 Episode 6 The Mermaid of the Abyss! Air Date: 2018-08-15 Duration: 25 min |
| Season 3 Episode 7 A Solitary Medley! Air Date: 2018-08-22 Duration: 25 min |
| Season 3 Episode 8 Metamorphosis of the Soul! Air Date: 2018-08-29 Duration: 25 min |
| Season 3 Episode 9 Interval in the Evening Calm! Air Date: 2018-09-05 Duration: 25 min |
| Season 3 Episode 10 The Grab Start of Hope! Air Date: 2018-09-12 Duration: 25 min |
| Season 3 Episode 11 Streamline of Unity! Air Date: 2018-09-19 Duration: 25 min |
| Season 3 Episode 12 Dive to the Future! Air Date: 2018-09-26 Duration: 25 min |
| Directing | Eisaku Kawanami | Series Director |
| Production | Masayuki Nishide | Executive Producer |
| Production | Megumi Suzuki | Producer |
| Art | Shingo Kasai | Art Direction |
| Visual Effects | Joji Unoguchi | 3D Artist |
| Visual Effects | Yuji Shibata | 3D Director |
| Crew | Sachie Tsuda | Special Effects |
| Visual Effects | Eisaku Kawanami | Opening/Ending Animation |
| Visual Effects | Seiya Kumano | Opening/Ending Animation |
| Visual Effects | Miku Kadowaki | Opening/Ending Animation |
| Visual Effects | Kayo Hikiyama | Opening/Ending Animation |
| Visual Effects | Yoshiji Kigami | Opening/Ending Animation |
| Visual Effects | Sana Suzuki | Opening/Ending Animation |
| Visual Effects | Ryosuke Shirakawa | Opening/Ending Animation |
| Visual Effects | Sae Sawada | Opening/Ending Animation |
| Visual Effects | Takuya Yamamura | Opening/Ending Animation |
| Production | Yoko Kogawa | Executive Producer |
| Visual Effects | Minoru Ota | Opening/Ending Animation |
| Visual Effects | Yuko Myouken | Opening/Ending Animation |
| Visual Effects | Maiko Hado | Opening/Ending Animation |
| Writing | Koji Oji | Original Story |
| Sound | Yōta Tsuruoka | Sound Director |
| Production | Shinichi Nakamura | Producer |
| Writing | Masahiro Yokotani | Series Composition |
| Production | Yoko Hatta | Executive Producer |
| Production | Shunji Inoue | Executive Producer |
| Visual Effects | Futoshi Nishiya | Character Designer |
| Visual Effects | Futoshi Nishiya | Supervising Animation Director |
| Production | Shinichiro Hatta | Producer |
| Production | Shigeru Saito | Producer |
| Production | Masayuki Nishide | Producer |
| Visual Effects | Yuka Yoneda | Color Designer |
| Camera | Kazuya Takao | Director of Photography |
| Art | Seiichi Akitake | Prop Designer |
| Editing | Kengo Shigemura | Editor |
| Sound | Shigeru Saito | Music Producer |
| Sound | Tatsuya Kato | Original Music Composer |
| Editing | Gen Itakura | Online Editor |
| Visual Effects | Hiroyuki Takahashi | Opening/Ending Animation |
| Visual Effects | Shinpei Sawa | Opening/Ending Animation |
| Visual Effects | Kunihiro Hane | Opening/Ending Animation |
| Visual Effects | Ryouhei Muta | Opening/Ending Animation |
| Visual Effects | Tatsuya Satou | Opening/Ending Animation |
| Visual Effects | Chiyoko Ueno | Opening/Ending Animation |
| Visual Effects | Nami Iwasaki | Opening/Ending Animation |
| Sound | Eiko Morikawa | Sound Effects |
