Tens of thousands of fishermen and activists have written the Food and Drug Administration, which is considering approving genetically engineered salmon as food. They worry the giant fish could escape into the wild and interbreed with natural salmon.

"Protection measures have failed to stop around 100 million sharks being fished every year and a third of all shark species are now threatened with extinction, conservationists say."

"You're going to need a bigger fishbowl.

"If you order tuna at a D.C. restaurant, chances are half the time you’ll be getting another, less expensive fish in its place. But those odds are better than if you had wanted snapper. Testers nationwide found that 87 percent of the time, restaurants and grocery stores were selling something else under that label."

"What happens to fish that swim in waters tainted by traces of drugs that people take? When it's an anti-anxiety drug, they become hyper, anti-social and aggressive, a study found. They even get the munchies."

"During the Gold Rush, the San Francisco Bay’s native oyster habitat was all but wiped out due to overharvesting and hydraulic mining washing sediment onto the bay floor. But a Richmond-based nonprofit has plans to restore the shellfish’s lost habitat along the Point Pinole shoreline."

The labels meant to give consumers confidence in the sustainability of the seafood they buy may be deceptive.

"Every summer, millions of sockeye salmon flood into the Fraser River in British Columbia, clogging its shivering waters with their brilliant blushing bodies."

"TOKYO -- A wildlife conservation group said in a report on Wednesday that Japan has been propping up its whaling industry with nearly $400 million in tax money in recent years, stepping up subsidies even as consumption of whale meat here has slumped."

"SAN JOSE, Calif. -- They've been called everything from killing machines to misunderstood predators who are key to healthy ocean environments. Now great white sharks may be called something else: endangered."