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Fishermen have been reporting sightings of the black demon shark for decades… Now, researchers are determined to find the legendary shark. Watch Mystery of the Black Demon Shark TONIGHT at 10p on Discovery. #SharkWeek | Shark Week

In the past two days, four shark attacks have occurred off the coast of Australia, including one incident near Sydney Harbor where a boy was critically injured while jumping off rocks. CNN's Angus Watson reports. Read more: https://cnn.it/4bF01Vs | CNN