Along South Africa's east coast, between May and July, billions of spawning sardines travel north towards Mozambique. They are pursued by predators ranging from sharks to dolphins, whales and even humans.
Before the Covid-19 pandemic, the annual "Sardine Run" would attract tourists from across the globe. But this year, South African free diving champion Beth Neale was one of the few people who witnessed this phenomenon.
Armed with a GoPro and 360-camera, she swam beneath the big black slick of fish to film the incredible variety of marine wildlife it attracts. She believes her footage can help people appreciate how the ocean ecosystem depends on seemingly insignificant fish like the sardines.