The "red tide" algal blooms that are becoming more frequent along the Pacific coast produce one of the most potent neurotoxins known: saxitoxin, or STX. The toxin accumulates in shellfish and causes paralytic shellfish poisoning (PSP) when consumed.

Source: [Phys.org](https://phys.org/news/2026-07-frog-protein-antidote-deadly-red.html)

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