More great white sharks were spotted Wednesday along the Southern California coastline where beachgoers received warnings from Capistrano Beach to San Onofre State Park, the site of a shark attack nearly two weeks ago.

A deputy in Orange County Sheriff's Duke 1 helicopter issued the warnings on behalf of state parks, as reported by the Orange County Register. He gave a paddleboarder this ominous message:

"Be advised state parks is asking us to make an announcement to let you know that you are paddleboarding next to approximately 15 great white sharks. They're advising you to exit the water in a calm manner. The sharks are as close as the surf line."

The sheriff's department shared video of the warnings with clear footage of at least one of the great white sharks swimming near shore; others are more difficult to discern:

OC Lifeguards Chief Jason Young told the Register people on the beach reported seeing a shark breach and had reinstated an advisory Thursday after dropping it the day before.

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From the Register:

Young said it was not an ocean closure, which occurs when sharks are more than 8-foot long and/or are acting aggressively in the water.

"We haven't had any reports of anyone being bumped or charged, just observations of them either swimming or breaching," he said.