Sperm Whale? Where did they get their name? 🐋 Sperm whales, more commonly known as sperm whales, derive their name from a substance found in their heads called spermaceti. Early whalers believed this substance, which is actually a type of waxy oil, was sperm, hence the name “sperm whale.” The spermaceti organ in the whale’s head is used to regulate buoyancy and possibly aid in echolocation. #nature #loveouroceans #science 🐳 #sciencehistory | Chemical Kim