From above, it looks like a vast oil spill spreading across the ocean. It's been called the "Greatest Shoal on Earth" and it's one of the planet's biggest migrations in terms of biomass.


원문출처 : https://www.cnn.com/travel/article/greatest-shoal-on-earth-south-africa-sardine-run-c2e-spc-intl-scn/index.html