Great white sharks have been seen off the beaches in South Africa's coastal city of Cape Town for the first time in more than four years.

Some places, like coastal areas in South Africa's KwaZuluNatal province, seek to tackle the danger by using nets and baited hooks to kill sharks, but this also harms other sea life, such as dolphins and turtles.

The International Union for Conservation of Nature has said it strongly encourages nonlethal approaches to addressing the risk from sharks.

In Cape Town, the approach aims to protect both sharks and people by keeping them apart.

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