New answers tagged 3d
Found it! It is a 22 minutes long japanese animation called Glassy Ocean (Kujira no Chōyaku). https://it.wikipedia.org/wiki/Kujira_no_Ch%C5%8Dyaku_-_Glassy_Ocean
From Wikipedia, excerpt on 3D films: The first 3D feature film was Nat Deverich's 5-reel melodrama Power of Love (US '22), starring Terry O'Neil and Barbara Bedford. It premiered at the Ambassador Hotel Theater, Los Angeles, on September 27, 1922.
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