Illustration of Prorocentrum minimum (Dinoflagellate) . P. minimum is a bloom-forming planktonic species in temperate, brackish waters to tropical regions; mostly estuarine, but also neritic. Due to its small size, often lost or overlooked in field samples. Cells are active swimmers. P. minimum is a toxic species; it produces venerupin (Hepatotoxin) which has caused shellfish poisoning resulting in gastrointestinal illnesses in humans and a number of deaths
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 Amphidinium operculatum (Dinoflagellate) , an epi-benthic/epiphytic algae that is considered toxic and linked to ciguatera toxins