Editing Shellfish (section)

== Toxic content ==
Some shellfish, such as [[whelk]], contain [[arsenic]]. A sample of whelk was found to have a total content of arsenic at {{nowrap|15.42 mg/kg}} of which 1% is inorganic arsenic.<ref name="gov_fsis8205">{{cite web|title=82/05 October 2005 Arsenic in fish and shellfish|url=http://www.food.gov.uk/multimedia/pdfs/fsis8205.pdf|date=2010-09-08|access-date=2013-04-06|publisher=Government of the United Kingdom|archive-date=21 July 2013|archive-url=https://web.archive.org/web/20130721044102/http://www.food.gov.uk/multimedia/pdfs/fsis8205.pdf|url-status=dead}}</ref>

Shellfish caught in [[Alaska]] can cause [[paralytic shellfish poisoning]] (PSP).<ref>{{cite web|url=http://dhss.alaska.gov/dph/Chronic/Documents/02-Internal/ParalyticShellfishPoisoningFactSheet.pdf|title=Fact sheet|website=dhss.alaska.gov|access-date=2020-06-16|archive-date=12 July 2018|archive-url=https://web.archive.org/web/20180712173150/http://dhss.alaska.gov/dph/chronic/documents/02-internal/paralyticshellfishpoisoningfactsheet.pdf|url-status=dead}}</ref> PSP is caused by toxins, namely saxitoxin, released by [[dinoflagellate]]s, a type of protista (also considered algae), which are extremely poisonous (1000 times more potent than cyanide) and can lead to death by paralyzing the breathing muscles. Due to warming oceans, algae blooms have become more widespread,<ref>{{cite web | last=Meyer | first=Robinson | title=An Upheaval at the Ends of the World | website=The Atlantic | date=2018-12-12 | url=https://www.theatlantic.com/science/archive/2018/12/north-pole-faces-unprecedented-climate-future-nasa-says/577915/ | access-date=2020-06-16}}</ref> thereby increasing the likelihood of intoxications of various types.