Food Safety Research Information Office: Ciguatoxin
- Directory of factsheets, reports, press releases, and resources on the toxin.
- http://fsrio.nal.usda.gov/document_reslist.php?product_id=128

What You Should Know About Pfiesteria piscicid
- This toxic dinoflagellate can cause symptoms in people exposed to water contaminated by the toxin. Information about the organism and links to technical and other material on this organism.
- http://ehp.niehs.nih.gov/topic/pfiest.html

Harmful Algal Blooms and Biotoxins
- Factsheet on algal blooms and their effects on humans through affected fish and shellfish.
- http://www.nwfsc.noaa.gov/hab/habs_toxins/

CDC: Ciguatera Fish Poisoning
- Includes factsheet and publications.
- http://www.cdc.gov/nceh/ciguatera/

American.edu: Blowfish and Trade
- Outline and overview of this subject.
- http://www.american.edu/TED/blowfish.htm

The Merck Manual: Chemical Food Poisoning
- Causes, symptoms, and signs of poisoning caused by eating plants or animals that contain a naturally occurring poison.
- http://www.merck.com/mrkshared/mmanual/section3/chapter28/28h.jsp

eMedicine Health - Ricin
- Consumer health resource center providing information on the symptoms and treatment of ricin poisoning.
- http://www.emedicinehealth.com/articles/42387-1.asp

WHO: Water-related diseases - Cyanobacterial Toxins
- Includes cause, effects on people, distribution, scope of the problem, and prevention.
- http://www.who.int/water_sanitation_health/diseases/cyanobacteria/en/

Mytraveldoctor: Blue-Green Algae Toxicosis
- Describes the occurrence, manifestations, diagnosis, treatment, and prevention of the disease.
- http://www.traveldoctoronline.net/diseases/algae.htm

Ricin Toxin from the Castor Bean Plant
- Scientific and medical article on the toxin and its effects.
- http://www.ansci.cornell.edu/plants/toxicagents/ricin/ricin.html

Human Illness Associated with Harmful Algae
- Discusses the various fish and shellfish toxicities of humans caused by the animal's ingestion of toxic algae.
- http://www.whoi.edu/science/B/redtide/illness/illness.html

eMedicine - Toxicity, Tetrodotoxin
- Article by Theodore Benzer, MD, PhD.
- http://www.emedicine.com/emerg/topic576.htm

DBMD - Marine Toxins
- Discusses the causes, symptoms, and prevention of several toxins carried by fish and shellfish.
- http://www.cdc.gov/ncidod/dbmd/diseaseinfo/marinetoxins_g.htm

Cyclopeptide-Containing Mushroom Toxicity
- Features cause, symptoms, treatment, and possible antidotes.
- http://www.uic.edu/com/er/toxikon/mushroo.htm

Poisonous Mushrooms
- Description of toxic species and the symptoms their toxins produce.
- http://www.mv.com/ipusers/dhabolt/dad/mushroom/puffball/puffball4/poisonous.html

eMedicine - Toxicity, Mushrooms
- Article by Mary E Cataletto, MD.
- http://www.emedicine.com/emerg/topic874.htm

Bad Bug Book: Scombrotoxin
- Caused by the ingestion of foods that contain high levels of histamine. Includes cause, symptoms, associated foods, and outbreaks.
- http://www.cfsan.fda.gov/~mow/chap38.html

Bad Bug Book: Mushroom Toxins
- Includes toxic substances and their effects, symptoms, diagnosis, descriptions of some poisonous mushrooms, and outbreaks.
- http://www.cfsan.fda.gov/~mow/chap40.html

Bad Bug Book: Tetrodotoxin
- Pufferfish or Fugu poisoning. Includes cause, symptoms, prognosis, and outbreaks.
- http://www.cfsan.fda.gov/~mow/chap39.html

Bad Bug Book: Various Shellfish-Associated Toxins
- Caused by consuming shellfish that have accumulated dinoflagellate toxins. Features cause, symptoms, associated foods, and outbreaks.
- http://www.cfsan.fda.gov/~mow/chap37.html

Bad Bug Book: Ciguatera Fish Poisoning
- Caused by the consumption of subtropical and tropical marine finfish which have accumulated naturally occurring dinoflagellate toxins through their diet. Includes cause, associated fish, symptoms, and outbreaks.
- http://www.cfsan.fda.gov/~mow/chap36.html