S32 Ep12: Sardine Run in South Africa

Aired: 5/21/2014 | 0:02:59 | Clip
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.