I'd appreciate any help identifying this animated film.
The main portrayal is of an island society that hunts huge whale-like creatures, using boats and harpoons. When a member of this society dies, he tumbles down an immensely deep hole, where he undergoes reincarnation into one of the whales.
This film was from Japan and I saw it in the early 1990s, I think, on a VHS collection from some animation festival or other. It was in color and I do not remember there being any language in the film.