Places where the offences were registered include the Ria Formosa Natural Park, the Southwest Alentejo and Vicentina Coast Natural Park, Vila Nova de Milfontes, Aljezur, Arrifana, Bordeira and Sagres.
Throughout the whole of last year the GNR issued 217 fines, the majority in July and August, and, according to that force, since 2009, 659 fines have been issued, less than a fifth of which (120) to Portuguese nationals.
The exact total of how much has been generated in fines has not been tallied up.