Umi Monogatari: Marin no Kore Naani?
English title: Umi Monogatari: Marin's "What Is This?"
Japanese title: うみものがたり マリンのこれなぁに？
Type: Special
Source: Game
Episodes: 4
Status: Finished Airing
Aired: Nov 22, 2009 to Feb 24, 2010
Duration: 2 min per ep
Rating: PG-13 - Teens 13 or older
Studios: Zexcs
Genres: Comedy

DVD/Blu-ray specials of Umi Monogatari.