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 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 ...

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 ...

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.