Children of the Sea
Kaijuu no Kodomo
79 / 100 on AniList 7.96 / 10 on MyAnimeList
Drama · Mystery · Supernatural
When Ruka was younger, she saw a ghost in the water at the aquarium where her dad works. Now she feels drawn toward the aquarium and the two mysterious boys she meets there, Umi and Sora. They were raised by dugongs and… Synopsis via AniList