The Food Safety Authority of Ireland, along with other partner organizations, has issued a warning against the collection or consumption of shellfish from the Castlemaine production area in the South West of Ireland. This precautionary measure was necessary after the detection of paralytic shellfish poisoning (PSP) in shellfish samples from the area. PSP is a condition caused by the consumption of shellfish that have been contaminated with a toxin originating from certain algal blooms. The toxin does not affect the shellfish but can be lethal to humans. The area is now closed for monitoring, with the results to be published in the Marine Institute’s Harmful Algal Bloom Shellfish Monitoring Programme.