What makes swordfish the fastest swimmers on Earth? It’s all about the lube!

Swordfish are among the fastest swimmers on Earth, reportedly reaching speeds of up to 60 mph. Their “sword” appendage helps them slice through the water, but they still have to deal with friction and drag from their less-pointy head. According to this study, the fish counter this friction through a clever mechanism: lube! These scientists discovered an oil-producing gland on the swordfish head that helps to lubricate the skin and reduce drag, increasing swimming efficiency. How slick is tha

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