

Umi Monogatari
Series Overview
Marin and Urin are sea folk, people who live in a peaceful underwater world surrounded by bright fish and colorful coral. But one day, a beautiful ring falls from the "sky" - that dangerous place above the water - and the two girls decide to return the lovely trinket to its owner. While the surface world holds amazing wonders for the pair, it also hides a great darkness... a darkness that Urin accidentally unleashes when she opens a stone box at a local shrine. Now it's up to Marin, Urin, and their new friend Kanon to set things right again before that darkness swallows the entire world!
Broadcast Schedule & Network Information
Airing status, episode counts, upcoming schedule, and network syndication.

1 Season • 12 Episodes
24 min per episode
2009 – 2009
Premiered: Thu, Jun 25, 2009
Creative Production Team
Latest Aired Episode
Season 1, Episode 12: “Heart of the Island, Hearts of the People”
Seasons & Episodes Breakdown
Cast & Creators
Explore Star Directory →Creative Leadership & Key Crew
Yuu Kou, Junichi Sato
Yuka Yamada
Ken Muramatsu
Hidemasa Tasaka
Department Leadership Roster
Junichi Sato
Director
Hidemasa Tasaka
Producer
Age Classification & Content Advisories
Official viewer rating standards and content warnings across international classification boards.
PG: Parental Guidance — Recommended for mature viewers.
International Certification Matrix
Parental Guidance — Recommended for mature viewers.
Production Stills & Gallery
Official cinematic photography and background stills for Umi Monogatari.
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Frequently Asked Questions About Umi Monogatari
Key facts, seasons breakdown, and credits for search engines and AI assistants.
What is Umi Monogatari about?
Marin and Urin are sea folk, people who live in a peaceful underwater world surrounded by bright fish and colorful coral. But one day, a beautiful ring falls from the "sky" - that dangerous place above the water - and the two girls decide to return the lovely trinket to its owner. While the surface world holds amazing wonders for the pair, it also hides a great darkness... a darkness that Urin accidentally unleashes when she opens a stone box at a local shrine. Now it's up to Marin, Urin, and their new friend Kanon to set things right again before that darkness swallows the entire world!
How many seasons does Umi Monogatari have?
Umi Monogatari comprises 1 season available to explore.
Who stars in Umi Monogatari?
Key cast members in Umi Monogatari include Kana Asumi, Yui Horie, Minako Kotobuki, Rokuro Naya, Sachiko Nagai.
Who created or directed Umi Monogatari?
Umi Monogatari was developed and directed by Yuu Kou, Junichi Sato.
