By Name
| Causative Organism | Syndrome | Affected Areas |
| Alexandrium spp. | Paralytic shellfish poisoning (PSP) |
U.S. west coast including Alaska New England coastal states Canada Chile Brazil Europe South Africa Asia Australia New Zealand |
| Dinophysis spp. | Diarrhetic shellfish poisoning (DSP) | Europe Japan Atlantic Canada South Africa Chile Thailand New Zealand Australia |
| Gambierdiscus toxicus | Ciguatera fish poisoning (CFP) |
Hawaii Gulf of Mexico Puerto Rico Caribbean Australia many Pacific islands |
| Gymnodinium catenatum | Paralytic shellfish poisoning (PSP) |
U.S. west coast New England coastal states Canada Chile Brazil Europe South Africa Asia Australia New Zealand |
| Karenia brevis Karenia brevisulcatum |
Neurotoxic shellfish poisoning (NSP) |
U.S. Gulf coast New Zealand |
| Karlodinium veneficum | fish kills |
U.S. mid Atlantic coast US southeast coast US Gulf coast Australia South Africa |
| Lyngbya | Swimmer's itch Dermatitis |
Australia Florida Worldwide throughout the tropics and subtropics |
| Pfiesteria piscicda Pfiesteria spp. |
Possible estuary-associated syndrome (PEAS) |
North Carolina Maryland Delaware |
| Prorocentrum lima | Diarrhetic shellfish poisoning (DSP) |
Europe Japan Atlantic Canada South Africa Chile Thailand New Zealand Australia |
| Protoperidinium crassipes | Azaspiracid shellfish poisoning (AZP) |
England Scotland Ireland France Spain Morocco Norway |
| Pseudo-nitzchia spp. | Amnesic shellfish poisoning (ASP) |
U.S. west coast including Alaska Georges Bank Atlantic Canada Chile United Kingdom Australia New Zealand |
| Pyrodinium bahamense var. compressum | Paralytic shellfish poisoning (PSP) |
U.S. west coast including Alaska New england coastal states Canada Chile Brazil Europe South Africa Asia Australia New Zealand |
Last updated: July 31, 2012
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