This Discovery documentary (available on Youtube 
Interestingly, the seal island in False Bay, South Africa, has also been broken up into kill zones by another film maker. These stretches of water has been called kill zones as it offers the perfect conditions for great white sharks to breach out of the water in pursuit of it's prey. If you want to come see these kill zones on the coast of Cape Town , visit https://whitesharkdivers.co.za/cape-town-cage-diving/