Community
The Science of Shark Oil Barometers
Outside many homes on Bermuda, curious-looking bottles hang from porches. These are shark oil barometers, homemade devices that for nearly 300 years have been used by islanders who swear that the oil can predict the severity of approaching storms and hurricanes. Fishermen contrive the oil by extracting it from shark livers, filtering it through cheesecloth, then sealing it in bottles. Folklore holds that when a storm approaches, the clear oil turns cloudy or spins at the base of the bottle,…
January 3, 2016