Dolphins with brain disease also test positive for algae toxin: study

Toxins produced from nasty blue-green algae made an appearance in dead dolphins that tested positive for brain disease.

The Miami Herald reports a University of Miami study found in all but one of the 14 dolphins it examined, the BMAA toxin was detectable in those that showed signs of degenerative damage similar to Alzheimer's in humans.

The one dolphin died from a boat strike.

Researchers are trying to figure out to what extent the algae's toxins, which have plagued Florida's waterways in recent years, threaten human health. It is concerning enough as dolphins are considered a sentinel species -- one that could give warning of issues that might affect humans.