The incipit of a piece from Portugal News:
Archaeologist Cristóvão Fonseca explained that the fieldwork, which is due to last two weeks, will comprise an initial phase of visual prospection and data recording with photographs and drawings, and the excavation of artefacts that may be found on the surface.
It is believed one of the locations identified for prospection may have been the site of a shipwreck during Roman times, due to the discovery of a large concentration of ceramic vases called amphora, some still intact.
Despite this, the theory may only be confirmed with excavations, which depending on the results obtained during the next two weeks could take place next year. [...]
… it goes on to mention other finds from other periods …and includes a photo of things they’ve brought up, none of which really looks Roman.