Sardine Run KwaZulu-Natal — South Africa
The South African Sardine Run from May through July — the southward migration of billions of sardines along the KwaZulu-Natal coast, creating a 'bait ball' event in which dense sardine schools are herded to the surface by cooperative dolphin hunting, attracting gannets from above and sharks from below — is described by the BBC and National Geographic as the greatest shoal of fish on Earth. The East London to Durban coast produces the most accessible encounters: dive boats deploying swimmers directly into active bait balls where common dolphins, copper sharks, and Cape gannets plunge-dive simultaneously within arm's reach of the diver. A bait ball's interior — the sardines' mirror-scaled sides catching the light, the sharks'turning shapes visible through the school, and the gannet impacts from above breaking the surface — is one of the most visually complex and biologically intense marine encounters available to recreational divers anywhere in the world.
About this spectacle
Each year between May and July, billions of sardines migrate northward along the KwaZulu-Natal and Wild Coast shoreline, triggering one of the ocean's most spectacular feeding frenzies. Dive boats out of ports like Port St Johns deploy swimmers directly into active bait balls — dense, writhing spheres of sardines herded to the surface by common dolphins working in coordinated pods. Within these bait balls, copper sharks bank and turn in tight arcs, their shapes looming through the silver flash of sardine scales. Cape gannets plunge-dive from height, entering the water like arrows mere metres from divers. The sensory intensity is overwhelming: the clicking and squealing of dolphins, the concussive impact of gannet strikes, and the physical pressure of thousands of fish pressing against a diver's body. Light refracts through the school in fractal patterns. The event is fleeting — bait balls collapse in minutes — making each encounter unpredictable and unrepeatable. Nothing in recreational diving compares to the biological immediacy of a functioning bait ball.
When to go
May — Jul
Getting there
Nearest airport: DUR. Nearest city: Durban.
Booking options
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