Bailey said he also saw a juvenile great white in waist-high water in the same area, but nobody was in the water at the time.

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As long as the sharks remained non-aggressive and feeding on bottom fish, Bailey said the water would remain open to the public, although surfers and swimmers would be warned.

After hearing Seal Beach lifeguards say their $1,400 drone was working for them, other lifeguards in California said they'd be open to working with drones, too.