[6] According to Juan Vidal Romaní, professor of geology at the University of A Coruña, 14,000 years ago the coastline consisted of large sand dunes several kilometres west of the Ons Island, which at that time and for several millennia remained connected to the mainland.

The entire configuration of the present-day Ria de Pontevedra was a succession of oak and chestnut forests, with meadows in the lower areas.

[6] In 2018, remains of prehistoric soil, paleosol, in the form of slabs of a compact and sticky substance appeared in Mourisca, in Beluso (Bueu).

[8] Sailing can be practised safely in its waters, with the Royal Nautical Club of Sanxenxo standing out among the facilities designed for this purpose.

[10] Another point of attraction is the presence of the island of Ons, belonging to the municipality of Bueu and part of the National Park of the Atlantic Islands of Galicia, which can be reached by ferries from Sanxenxo, Portonovo, Marín and Bueu, with its superb beaches,[11] as well as the privileged lookout towers on the ria, from O Grove to Home Cape.

There are also many species of interest, including various species of shellfish (clams, praires, cockles, periwinkles, limpets, razor clams, mussels, oysters, scallops, queen scallops, velvet crabs), thanks to which some of the inhabitants of the ria work in the shellfish fishing sector.