====== Whale spermaceti organ ====== The //Spermaceti organ// found in the heads of sperm whales produces an oily/waxy substance. There can be up to 2 tonnes of oil in each animal. It's also produced in smaller quantities in some other whale species. Before whaling was made illegal (in most countries) there was a large market for the oil, which was used in lamps, candles, medicines and for specialist lubrication. There are three main theories regarding its possible function(s). * As an adjustable buoyancy device * As a buffer in collisions * As a bio-sonar echo resonator To date, no theory has been agreed upon. See: [[https://en.wikipedia.org/wiki/Spermaceti#Biological_function|Wikipedia]]