The harvesting and trade of clams and cockles is prohibited in the southern Algarve coast, between Faro and Vila Real de Santo António, as well as in the Ria de Aveiro, due to the presence of a toxin that makes these bivalves dangerous for human consumption.
Carlos Vale, researcher and head of the environment unit at IPIMAR, told TSF that the symptoms caused by the DSP toxin caused by phytoplankton are "vomiting and diarrhea".
The only species that can be caught is the conch, but in the area between Vila Real de Santo António and Tavira.
Neither the Ria Formosa nor the Ria de Alvor are affected.
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