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.

For the first time, a peer-reviewed study has documented sustained increased levels of dissolved oxygen in the Long Island Sound, environmental officials said, a sign of improving marine health they ...

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 ...

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 ...