When the wind is blowing toward shore, low levels of Karenia Brevis can cause eye, nose and throat irritation in humans, said Earnest Truby, research scientist at Fish and Wildlife Research Institute.
Larger concentrations kill fish and marine mammals such as dolphins and manatees.Truby
said this year's bloom was first discovered in a sample taken June 15.He
said FWRI scientists cruised their research vessel along the Southwest Florida coast to take more samples last week.
The concentrations of Karenia Brevis in last week's samples were about half of what they were in the June 15 sample.
"I guess that could be encouraging," he
said."There weren't any fish kills or anything like that."Truby
could not guess whether conditions were ripe for the algae to flourish or die off.