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MARGATE, SOUTH AFRICA APRIL 25: Shark expert and biologist Erich Ritter (r) speaks Roland Mauz, the owner of African Adventure diving, in a boat during a diving excursion, during an early morning dive at Protea Banks on April 25, 2018 in KwaZulu Natal, South Africa. The area is one of the best in South Africa for shark encounters. (Photo by: Per-Anders Pettersson/Getty Images)