Umi Monogatari: Anata ga Ite Kureta Koto
English title: Umi Monogatari
Japanese title: うみものがたり　～あなたがいてくれたコト～
Alternative titles: Umimonogatari Anata ga Itekuretakoto, Sea Story
Type: TV
Source: Game
Episodes: 12
Status: Finished Airing
Aired: Jun 25, 2009 to Sep 17, 2009
Broadcast: Thursdays at 01:29 (JST)
Duration: 24 min per ep
Rating: PG-13 - Teens 13 or older
Studios: Zexcs
Licensors: Nozomi Entertainment
Genres: Drama, Fantasy, Romance

Marin and her younger sister Urin are seafolk who happen upon something quite strange: a beautiful silver ring lost beneath the waves. The kind-hearted Marin, intent on returning it to its owner, drags a reluctant Urin along with her to the sky world despite reminders of a turtle elder who left for the surface and never returned. After locating the ring's owner, Kanon Miyamori, they learn that Kanon had tossed it into the sea after her boyfriend dumped her earlier that day.

Though Marin insists that such a lovely item should not be thrown away, Kanon discards it once again. As they search for the ring, Urin becomes separated from the other two and accidently breaks the seal on a stone coffin, releasing an evil being known as Sedna. Sensing Sedna's release, the formerly missing turtle elder, Matsumoto, reveals himself to Kanon and her companions, naming Marin as the Priestess of the Sea. Together with the Priestess of the Sky, she has the power to seal Sedna away again. And as luck would have it, during an encounter with one of Sedna's minions, Kanon discovers that she is the Priestess of the Sky. Though Kanon is hesitant, she and Marin decide to work together to save the world from the evil that threatens it.

[Written by MAL Rewrite]