As trillions of algal cells multiply, die and sink, their decomposing cells strip oxygen from the water and block sunlight, ...

A microscopic algae can cause what some call red tide. The blooms showed up locally in recent weeks. Microscopic algae blooms have turned the ocean off Ventura into a sort of brown soup in recent ...

Lake Norman is looking more colorful these days. Bright green, deep red and milky blue algae is blooming in northern parts of the lake — but these bright colors don’t bring good news.

Harmful algal blooms occur when algae and cyanobacteria, tiny plant-like organisms, overgrow in bodies of water such as rivers, lakes, and oceans, according to the Environmental Services agency.

There is no longer a risk of a harmful algae bloom as of June 24. The precautionary health advisory came from reports of cyanobacteria, also known as blue-green algae, at the reservoir.

After a brutal spring of toxic algae blooms turning sea lions into sick, snarling seaside hazards, anxious beachgoers can breathe a sigh of relief as experts say the worst of the poisoning is over.

"Algal blooms can be any color, but the most common ones are red or brown and are known as either 'red' or 'brown tides. Most algal blooms are not harmful, but some do affect fish and humans, as ...

Red algae (Rhodophyta) exhibit extensive diversity and represent a critical component of marine ecosystems, as well as offering valuable biotechnological and commercial applications.