Reporter on site: Great white sharks are spreading along the north-east coast of the USA – and are becoming an invisible threat

In the north-east of the USA, the great white shark has settled again and is becoming an invisible threat. Even if attacks are rare, the authorities warn and give important tips on how to behave. Reporter Alexandra Kraft reports from Cape Cod.

In the north-east of the USA, the great white shark has settled again and is becoming an invisible threat. Even if attacks are rare, the authorities warn and give important tips on how to behave. Reporter Alexandra Kraft reports from Cape Cod.