A Picture Speaks a Thousand Words. Diving with Sardines

South African free diving champion Beth Neale is one of only a few people who has witnessed first hand the Greatest Shoal on Earth. This year, armed with a GoPro and 360-camera, she swam beneath the shoals of sardines to film this phenomenon.

In a report for Call to Earth, CNN reports on the annual sardine run. It runs along South Africa’s east coast between May and July. Billions of spawning sardines travel north towards Mozambique. This event is one of the planet’s biggest migrations in terms of biomass.