A 'dead zone' off the Gulf coast is larger than NOAA predicted. The massive area poses danger to marine life, and recovery could take decades.

This makes it the 12th largest dead zone recorded in the past 38 years ... covering almost the entire 63,700-square mile Gulf of Oman year-round. Hypoxic waters also influence the fishing industry ...

This dead zone, the researchers now believe is by far the largest in the world, and may encompass the entire 63,700-square-mile Gulf of Oman in the Arabian Sea. It's around the size of Florida ...

Scientists have been studying the Gulf's dead zone for about 20 years, although its existence has been known for decades. So why is oxygen disappearing from fishing waters in the Gulf of Mexico?

An international team looks back 12 million years for clues about the formation of these vast areas where no life can survive A satellite image of the Northern Gulf of Mexico ... Today’s largest open ...