Are great white sharks endangered?

It's a mystery of the sea: How many great white sharks are prowling near California's surf lines? Some scientists say the population is large and healthy. Others say it is alarmingly small. No one has ever known for certain, ...

Killer whales migrate, study finds, but why?

Some killer whales, a study published Wednesday shows for the first time, wander nearly 10,000 kilometres (6,200 miles) from Antarctica's Southern Ocean into tropical waters -- but not to feed or breed.

Crews begin dismantling key California dam

For nine decades, the 10-story-high concrete dam with its rusted pipes, railings and valves has stood in the wooded canyons between the Big Sur hills and the picturesque town of Carmel, blocking the natural flows of the Carmel ...

Navy training, testing may kill whales, dolphins

U.S. Navy training and testing could inadvertently kill hundreds of whales and dolphins and injure thousands over the next five years, mostly as a result of detonating explosives underwater, according to two environmental ...

US govt sued over sea turtles snared in shrimp nets

Tens of thousands of endangered sea turtles die every year in the United States when they are inadvertently snared in shrimp nets, an environmental group alleges, filing a lawsuit Wednesday against the government.

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