Sardine Run in South Africa

Clip: Season 32 Episode 18 | 2m 59s

The seasonal movement of billions of sardines along the coast of South Africa, the greatest fish migration on the planet, includes a stunning example of collective thinking to throw off predators. Synchronous movement by the sardines relies on a pressure sense that runs along their bodies to detect the movements of their nearest neighbors.

Aired: 05/21/14

Rating: NR

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