Amphidinium operculatum (Dinoflagellate)

Illustration of Amphidinium crassum (Dinoflagellate)

Illustration of Pfiesteria piscicida (Dinoflagellate) , responsible for many harmful algal blooms in the 1980s and 1990s on the coast of North Carolina and Maryland. The species name piscicida means "fish-killer."

Illustration of P. Shumwayae (Dinoflagellate)

Illustration of Ceratium furca (Dinoflagellate)

Illustration of Ceratium furca (Dinoflagellate)

Illustration of Karlodinium micrum

Illustration of a third Dinoflagellate

Illustration of a second type of dinoflagellate