Ambergris ambergrease, or grey amber, is a solid, waxy, flammable substance of a dull grey or blackish colour produced in the digestive system of sperm whales.
Ambergris is often described as one of the world's strangest natural occurrences. It is produced by sperm whales and has been used for.
Sperm whales eject an intestinal slurry called ambergris into the ocean, where the substance hardens as it bobs along. Eventually it gets.