Science and Culture Today Discovering Design in Nature
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gills

salmon run
Salmon run, Brooks Falls, Katmai National Park, Alaska, by Dmitry Azovtsev, [CC BY-SA 3.0 or CC BY-SA 3.0], via Wikimedia Commons.

Another Fine-Tuned Mechanism Gets Salmon Home

Salmon may swim hundreds of miles up their native river to spawn. They need oxygen provided by a finely tuned delivery system in the heart. Read More ›

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