They are the third most likely shark to attack humans, according to NOAA Fisheries.

根据美国海洋和大气局渔业公司称，它们在最可能攻击人类的鲨鱼中排名第三。

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The National Oceanic and Atmospheric Administration (NOAA), which is the part of the Department of Commerce in charge of fisheries, also set new limits on the total catch.

美国国家海洋与大气局（隶属于商业部，负责渔业）也对捕鱼总量加以限制。

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Rebecca Lent is in charge of International Affairs at NOAA Fisheries, the US government agency responsible for protecting the country's marine resources.

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Ritchie Graves, a NOAA Fisheries Service biologist who makes sure federally owned dams are living up to their Endangered Species Act obligations not to kill too many salmon, said the survival rate for young salmon swimming downstream to the ocean has been higher than ever the past three years, hitting about 50 percent for sockeye.

MSN: Record numbers of sockeye salmon return to Northwest - US news - Environment | NBC News

Still, codfish aren't about to become an endangered species, according to Sam Rauch, head of the NOAA's fisheries service.

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"This is a Hobson's choice, " said Steve Murawski, chief science adviser for NOAA's fisheries unit and one of the officials working to assess the spill's environmental damage.

WSJ: Gauging Harm to Ecosystem Could Take Years