It was discovered in 2011 that the lake was infected with a toxic algae.

Shellfish beds will remain closed for at least another month because of red tide, a toxic algae.

In more recent years, swimming has been prohibited at times because of toxic algae.

These issues have now largely been resolved though some toxic algae remains in some of the dock areas in the Bay.

Nitrogen can also stimulate the growth of toxic algae that kill fish.

The presence of phosphorus was essential for the toxic algae to flourish.

Shallow dams and reservoirs are susceptible to outbreaks of toxic algae, especially if the water is warmed by a hot sun.

It also leads to the growth of toxic algae and threatens marine life.

Some scientists hypothesize that the grebes are being poisoned by toxic algae.

Granting aid to shellfish farmers where harvesting is suspended because of toxic algae enjoys my support.