Louie Psihoyos, the Boulder photographer and ecological activist turned filmmaker behind "The Cove ," isn't giving up the spotlight just because the Academy Awards have passed. After winning an Oscar on Sunday for a documentary that reveals a secret dolphin-slaughtering operation in Japan, he's taking on sushi joints in the United States. Armed with hidden video cameras and microphones, Psihoyos has revealed what authorities consider an illegal whale-meat operation at Hump, an exclusive sushi spot in Hollywood, reports The New York Times . "We’re moving forward rapidly," says Thom Mrozek, a spokesman for a U.S. attorney in California, noting that charges could come sometime this week. The sting, which began in October and continued into Oscars night, has caught the attention of BoingBoing  and The Wrap , which talked with Psihoyos in New York yesterday during the first screening of "The Cove" for the Japanese press. He says Hump isn't the only Los Angeles restaurant that deserves scrutiny for allegedly serving whale. "I know of two others that did it in the past two years," he claims. "It's in places that serve the highest-end sushi. If you speak Japanese and say the right thing, they have a special place in the cooler." A moratorium on commercial whaling by the International Whaling Commission has been in place since 1986.