Paralytic shellfish toxins exceeding the allowable limit were detected in natural razor clams (damchi) from the coastal area of Gijeo, Gyeongnam, leading the National Institute of Fisheries Science to issue a ban on shellfish collection in this region. The institute announced on the 3rd that 0.9mg/kg of paralytic shellfish toxins, exceeding the allowable limit of 0.8mg/kg, was detected in natural razor clams from Sibhangni, Gijeo, Gyeongnam, on the 2nd. Paralytic shellfish toxins are toxins that accumulate in the bodies of bivalves, ascidians, and sea hares when they ingest toxic plankton. Although toxins below the limit were detected in the nearby areas of Yuhori and Neungpodong, Busan,