Glassy Ocean (Japanese: たむらしげる) is a 1998 Japanese animated film directed by Shigeru Tamura. This is Tamura's second animated work following his 1993 short film Ursa Minor Blue (Japanese: 銀河の魚). The film was produced by the studios Project Team Sarah (for the animation), Ai ga areba Daijobu, and Bandai Visual

Alternative titles: 'Kujira no Chōyaku', 'Kujira no Chouyaku', 'クジラの跳躍', 'The Jump of the Whale'.