Umi Monogatari: Anata ga Ite Kureta Koto - Shinjiau Kokoro  

Umi Monogatari: Faithful Hearts, Umimonogatari Anata ga Itekuretakoto OVA, Umi Monogatari: Anata ga Ite Kureta Koto OVA, Believing Hearts, Umi Monogatari Episode 13, うみものがたり　～あなたがいてくれたコト～ 「信じあう心」

The anime series umi monogatari: anata ga itekureta koto has an additional episode one year after the main storyline. in this episode, the characters have moved on and are pursuing their individual goals. kanon is interested in oceanography and plans to pursue a career in that field. meanwhile, marin and her group come across a baby sea cow that has been separated from its mother while exploring the sea. would you like me to find information about how the girls can help reunite the lost sea cow with its mother?