Domoic acid wani nau'in neurotoxin ne wanda wasu nau'ikan diatoms na ruwa ke samarwa, wani nau'in algae na microscopic. Guba na iya tarawa a cikin wasu nau'ikan kifin da finfish waɗanda ke ciyar da waɗannan diatoms, wanda ke haifar da yanayin da aka sani da guba na shellfish (ASP) a cikin mutane da sauran dabbobin da ke cinye gurɓataccen abincin teku. Alamomin ASP na iya haɗawa da baƙin ciki na gastrointestinal, kamawa, da asarar ƙwaƙwalwar ajiya, a tsakanin sauran abubuwa. A lokuta masu tsanani, yanayin zai iya zama barazana ga rayuwa.