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1 .This is Scientific American's 60-Second Science. I'm Marissa Fessenden. Got a minute?
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2 .Baleen allows the non-toothed whales to strain seawater for their fish and crustacean prey.
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3 .Alexander Werth of Hampden-Sydney College in Virgina avoided a Jonah-like journey and still managed to analyze how baleen works.
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4 .Two kinds of whales sport baleen.
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5 .Balaenid whales, such as the bowhead, have long, springy plates with a delicate fringe.
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6 .They filter water continuously.
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7 .Groove-throated whales such as humpbacks have dense baleen that looks like a folded accordion.
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8 .They gulp water to feed.
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9 .For the tests, Werth submerged racks of humpback and bowhead baleen in a flow tank.
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10 .Plastic beads represented food.
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11 .As water streamed by, filaments from neighboring baleen plates naturally twined together and trapped the beads.
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12 .The bowhead's long fringe formed the more effective filter, perfect for catching tiny krill.
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13 .But the humpback baleen still nabs plenty.
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14 .The study is in the Journal of Experimental Biology.
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15 .If you're going to be a massive carnivore without teeth, evolution has to be especially creative.
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16 .Thanks for the minute, for Scientific American's 60-Second Science. I'm Marissa Fessenden.
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