- Last Episode: Umi Monogatari EP 12 (Sub) Full Complete
- First Episode: Umi Monogatari EP 1 Update
Marin and Urin, two pure sisters, live alongside the fish in the sea, but yearn to be in the world beyond the water and above ground. One day, a beautiful ring falls in the middle of the sea, and Marin and Urin retrieve it. The two decide to leave their water-bound world for the first time to deliver the ring. After an arduous journey, they come across an isolated island where a high school girl named Kanon lives. The encounter between Marin and Kanon — the maiden of the sea and the maiden of the skies — awakens a hidden power as the world is threatened by an enveloping darkness.
- Other Title: Umi Monogatari: Anata ga Ite Kureta Koto, Umimonogatari Anata ga Itekuretakoto, Sea Story, うみものがたり ～あなたがいてくれたコト～, Umi Monogatari, Umimonogatari
- Status: Completed
- Sub/Dub: Anime Sub
- Anime Type: TV
- Genres: Adventure, Kids, Drama, Fantasy, Romance, Supernatural, Super Power, Seinen, Magic, Ecchi, Comedy, Action, Animation
- Characters: Marin, Miyamori, Kanon, Urin
- Score: 6.61
- Rank: 5974
- Popularity: 3865
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