In an unusual operation that was sparked by the team behind the Oscar-winning documentary film about dolphin hunting, The Cove the restaurant, the Hump, was investigated by the National Oceanic and Atmospheric Administration, the United States Fish and Wildlife Service, the California Department of Fish and Game, and the federal Customs and Border Protection agency, which all concluded that the restaurant was serving endangered Sei whale as sushi...

Source: http://www.nytimes.com/2010/03/11/us/11sushi.html