Series 2013 - The Blacktip Shark Mystery

The Blacktip Shark Mystery

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In 2006, dive boat operator Mark Addison witnessed the mysterious arrival of sixty blacktip sharks off the coast of South Africa. Initial theories about why the blacktips had arrived revolved around the annual sardine run, but this time the usually migratory blacktips stayed.

The blacktip gang set about taking over the reef, chasing away the larger tiger sharks that had been the focus of Mark’s dive operation on the Aliwal reef. He decided to study the invading sharks and discovered that his group was 100% female and over two hundred strong. Mark believed that the blacktips were not only living within a hierarchy but also were communicating using sound.

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