Algal neurotoxin enters deep-sea food web, kills whales while crab cakes and marinated clams make for delightful cuisine, shellfish poisoning is a health risk. Shellfish feed on algae that produce harmful toxins. Domoic acid (DA) is one such neurotoxin, dangerously high levels of which are produced during algal blooms of the species, Pseudo-nitzschia. The toxin was earlier believed to