do·mo·ic acid 
(də-mōĭk)
(də-mōĭk)n.
A water-soluble amino acid found in various marine algae that is a potent, often deadly neurotoxin to humans when consumed in contaminated mussels, clams, crabs, and anchovies.
[From Japanese dialectal (Tokunoshima Island) domoi, seaweed (Chondria armata) in which the toxin is found.]