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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Delta and Dawn ： ウィキペディア英語版 Delta and Dawn Delta and Dawn, also known as the Delta whales, were two humpback whales, a mother and her calf, which entered San Francisco Bay in early May 2007. They swam up the Sacramento River approximately upstream from the Golden Gate,〔 about further inland than Humphrey the Whale had gone two decades earlier. Per the Endangered Species Act, California state officials were required to rescue the animals. Their journey was thought to be longest freshwater incursion by humpback whales. ==Efforts to save the whales== Staff from the Marine Mammal Center, researchers, Coast Guard personnel, and volunteers tried several methods to coax the Delta and Dawn back downriver.〔 The Marine Mammal Center was appointed by the California Office of Emergency Services as the lead rescue agency.〔 Officials played recordings of the sounds of other humpback whales feeding and socializing to lure them,〔 〕 and banged on submerged metal pipes and sprayed high-powered blasts of water to repel them, but it is not clear whether any of these were particularly effective.〔 〕 There was heightened concern for the whales' well-being this time, because both of them had sizable gash wounds, most likely made from boat keel or propeller strikes. Veterinarians from the Marine Mammal Center administered antibiotics to the whales to help heal these deep open wounds, and they took samples of skin lesions incurred during the whales' extended time away from seawater to analyze them for possible freshwater bacterial infection. This was the first time antibiotics had been administered to free swimming whales in the wild.〔 〕 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「Delta and Dawn」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.