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Shark-spotting drones help keep swimmers safe

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The drones sound an on-board siren to warn swimmers when spotting a nearby shark.

from BBC News - World https://ift.tt/2Hp6HdA
Shark-spotting drones help keep swimmers safe Shark-spotting drones help keep swimmers safe Reviewed by Qamar javed on April 25, 2018 Rating: 5

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