Wikipedia
Skywhales
Skywhales is a 1983 animated short film that depicts a fictional society of alien creatures dwelling in the atmosphere of a gas giant. The film is notable for the completeness of its depiction of a fictitious society, including alien language, flora, fauna, and social structures and practices.
It was released at the cinema in the United Kingdom in 1984, showing before the film Nineteen Eighty-Four. It is one of a number of animated shorts that feature on the British Animation Collection Volume 1 DVD.