WATCH: 'You are paddle-boarding next to 15 great white sharks!'

Just when they thought it was safe to go into the water..
15 great white sharks were spotted near paddle-boarders15 great white sharks were spotted near paddle-boarders
15 great white sharks were spotted near paddle-boarders

Video shows the chilling moment when paddle-boarders are asked to exit the water by the Sheriff's Police Department in Orange County, California, as they are seen to be surrounded by 15 great white sharks.

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