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She said the whitetip shark, however, wasn't bothered by the Shark Shields, so she will also have shark divers on hand to help distract them.
CNN: Nyad: Swim shows 60s 'not too late' for goals
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Divers without a certification can earn one at Thresher Shark Divers, Sea Explorers and other reasonably priced local shops on the island that offer safe and quality dives and courses.
BBC: Swimming with sharks in the Philippines
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Pearl divers once braved shark and jellyfish in hopes of surfacing with oysters.
BBC: Along Arabia��s east coast
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She's in the water without a shark cage, relying on electronic shark repellent and a team of divers to keep them away.
CNN: August 20, 2012 -- Updated 1157 GMT (1957 HKT)
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Speaking of sharks, Nyad is attempting the swim without a physical shark cage, and she is relying on an electronic shark repellent device and a team of divers to keep them away.
CNN: Diana Nyad making fourth attempt at Cuba-to-Florida swim
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Increasing numbers of divers are using a protective electronic device, called Shark Shield, while they work.
CNN: Divers embrace anti-shark device