Prorocentrum micans

Size 23µ base width, 41µ long, total volume 5678.17. Temperature range for P. micans 24.5 to 28.17 and the  salinity range 12.14 to 15.65. This sample, however, was collected in  Crescent Lake in the St. John's river system in Florida where the salinity is usually zero. It was possibly transported to the lake via bilge water. 

Florida