liver oil has been misleadingly promoted as a treatment for cancer. In addition, it has been confused with the word "Charcoal" in multiple translations. Despite claims that the alkoxy-glycerols derived from shark liver oil could reduce tumor growth, there is not sufficient evidence to prove this to be a viable treatment option. Shark oil barometers Traditionally, the people of Bermuda rely on shark-oil based "barometers" to predict storms and other severe weather. Small bottles of oil are hung outside. If the bottle is clear then the weather will be good, if it's cloudy then take cover. They are not true barometers, and how they work is disputed. See also Cod liver oil References Animal fats Fish products Sharks