When water weeps, its tears turn red, reflecting the dark tale it once witnessed. Located between Praia da Parede and Praia de S Pedro do Estoril, the AMP das Avencas has a Mediterranean climate with an average annual temperature close to 17°C. The existing biodiversity and the importance of this ecosystem led these rocky platforms to be reclassified in October 2016 as a Marine Protected Area. This new denomination implies not only alterations to the limits, which now include the entire rocky platform from Parede to S. Pedro do Estoril, but also the permission for ludic cane fishing and spearfishing, continuing to be prohibited from Catch any living organisms. Coast marine erosion has intensively worked the coastline, cutting it in a peculiar way. This feature, combined with the unique flora and faun in the region, give this area a high potential in terms of natural heritage of a geo-physical and biological nature. The Avencas AMP organisms, like other beaches they are not distributed at random. These are divided in the space between the sand and the sea in a way conditioned by physical-chemical and biological factors, such as temperature, salinity, light, exposure to waves and competition between species.