The ongoing problem of chronic low oxygen in some parts of South Puget Sound is drawing closer scrutiny amid concerns that it could grow worse. The state Department of Ecology has announced a $400,000 ...

Oxygen levels in the Long Island Sound are at their healthiest point in three decades, according to new research from the Long Island Sound Partnership. It marks a major milestone after years of ...

The hottest water temperatures in years have depleted oxygen levels in Long Island’s North Shore harbors and may have contributed to a recent spate of fish kills, a Stony Brook University marine ...

Scientists from Louisiana State University found a massive dead zone in the Mississippi Sound while conducting their annual survey in the Gulf of Mexico. The dead zone stretches from the Chandeleur ...

Low-oxygen areas in Long Island Sound dropped last summer to the smallest footprint recorded in nearly 40 years, according to data from Connecticut’s Department of Energy and Environmental Protection.

The waters of Hood Canal are notoriously low in dissolved oxygen — regularly falling to levels within the “stress zone” for marine life. But this year was particularly bad. “This is really the worst ...

Long Island Sound experienced this year the lowest levels of hypoxia, or low oxygen, since monitoring of water quality began nearly four decades ago, the Long Island Sound Partnership announced.