WTF Fun Fact – Spermaceti Organ And The Junk

A sperm whales head contains two large oil-filled compartments, known as the “spermaceti organ” and “junk,” that constitute up to 1/4th its body mass and extend 1/3rd the total length of the whale. – WTF Fun Facts

Source: Architecture of the sperm whale forehead facilitates ramming combat (nih.gov)

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