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Shark Shield (originally known as "Protective Oceanic Device" or simply "POD") is a portable electronic device that emits an electromagnetic field and is used by scuba divers, spearfishing, ocean kayak fishing and surfers to repel sharks. The electrical wave-form used in the Shark Shield is based on a technology originally invented by the KwaZulu-Natal Sharks Board of South Africa in the 1990s.〔 The Shark Shield device was developed by the Australian company SeaChange Technology Pty Ltd, and commercialized by its trading company (Shark Shield Pty Ltd ) established in October 2006.〔(【引用サイトリンク】url=http://www.shark.co.za/ElectricalRepellant )〕 ==History== The original wave-form used in the shark repelling technology was devised by three inventors, Graeme Charter, Sherman Ripley, Norman Starkey, and released in 1995 by POD Holdings Ltd, a joint venture company partly owned by the Natal Sharks Board and the South African Government. In 2001, the KwaZulu-Natal Sharks Board ceased distribution of the SharkPOD. All rights to the intellectual property were licensed to a South Australian-based company, SeaChange Technology Pty Ltd, with the inventor Mike Westcombe-Down developing various application patents which resulted in a commercial product line under the brand name Shark Shield in April 2002.〔 In 2007, Shark Shield introduced the third generation of products to replace the original FREEDOM4, expanding the range of products offered to include the SCUBA7, which replaced the original FREEDOM4, and introducing two new designs: the FREEDOM7, a versatile option that can be used by a broad range of ocean-users, including divers, bathers, bodyboarders, boaters and kayakers; and the SURF7, designed to be fitted onto a surfboard or stand-up paddleboard to offer surfers protection from sharks. Developed in Natal 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Shark Shield」の詳細全文を読む スポンサード リンク
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