The turquoise water of Hōnaunau Bay in Hawaii, an area popular with snorkelers and divers, is teeming with spiny creatures ...

Dead fish are being reported at two Arizona lakes. Wildlife officials say poor water quality caused by below-average ...

This marks Florida's first confirmed case of Sea Star Wasting Disease (SSWD), a devastating condition that has plagued ...

Researchers said Honaunau Bay now has an average of 51 sea urchins per square meter. This is considered to be the highest ...

Brian Wheeler, director of Save Wild Trout, recently documented extensive algae blooms on the Big Hole, Jefferson and Boulder ...

An overgrowth of duckweed—a small, fast-growing floating plant often found on stagnant water surfaces. This blocked the sunlight needed for the algae to do their work. Seasonal wildfires, which ...

Drinking water that comes from Herrington Lake has not been affected “and is being closely monitored,” state officials said.

Researcher monitoring Little Cayman reefs (photo courtesy of CCMI) (CNS): The coral cover on Little Cayman’s reefs has dropped to the lowest since monitoring began more than half a century ...

The pollution comes primarily from untreated sewage and fertilizer runoff that feeds algae overgrowth, a problem worsening with climate change. Traditional block-and-chain boat moorings present ...

The view from Sam Randall’s back porch in Geneva’s Mill Creek subdivision overlooks a retention pond in the Tanna Farms Golf Club that was green with algae overgrowth, buggy, and stinky this ...

Already under pressure because of the rising temperature of the ocean and water pollution, the coral reef in Hōnaunau Bay faces a new threat.

Harmful blooms come from a natural overgrowth of algae. The blooms have increased statewide as the climate warms. Like the Lake Welch bloom, they can appear quickly, often overnight.