Ría de Arousa Mussel Farm Boat Trip with Tasting in Spanish O Grove

The Port of O Grove

O Grove sits on a small peninsula at the mouth of the Ría de Arousa in the province of Pontevedra, joined to the mainland by the narrow sandy isthmus of A Lanzada. It is one of Galicia's best-known fishing towns, and its port bustles with fishing boats, seafood restaurants and the departures of the excursion boats that head into the estuary.

The town is so devoted to the sea that every October it holds a seafood festival, and just across a short bridge lies the island of A Toxa, known for its pine woods, spa hotels and a small chapel whose walls are covered in scallop shells. Arrive at the port a little before 12:30 with your passport or ID card, and you can easily combine this boat trip in O Grove with a stroll along the waterfront.

Cruising the Ría de Arousa

The Ría de Arousa is the largest of the Rías Baixas, the drowned river valleys of south-western Galicia where the Atlantic flows inland between green hills. About 25 kilometres long, it is sheltered by islands such as Arousa and Sálvora at its mouth, and its mix of fresh river water and nutrient-rich ocean currents makes it one of the most productive marine areas in Europe.

As the boat leaves O Grove you see the wooded shores, fishing villages and the island of Arousa, with the outline of the Barbanza peninsula on the far side. The water is usually calm inside the estuary. The best time to visit the Ría de Arousa is from late spring to early autumn, when days are long and mild, though trips run in other seasons too.

The Bateas: Galicia's Floating Mussel Farms

The highlight of this mussel farm tour in Galicia is the visit to the bateas, the square wooden rafts anchored across the estuary. From each raft hang hundreds of thick ropes reaching down around 12 metres, and on them young mussels grow for many months, feeding on the plankton carried in by the tides. The ría holds the largest concentration of these rafts in Europe, and Galician mussels carry a protected designation of origin.

The boat comes close to the rafts while the guide explains the whole process, from collecting the seed mussels on the rocks to thinning the ropes and harvesting with special boats fitted with cranes. You also learn how oysters and scallops, two other treasures of the Rías Baixas, are cultivated, and why this estuary produces some of the finest shellfish in Spain.

Underwater Viewing and Steamed Mussel Tasting

During the trip you can look down through the boat's underwater viewing area at the seabed of the ría, where fish, starfish, crabs and seaweed move among the mussel ropes and the sandy bottom. It is a fascinating view for children and adults alike and helps you understand the rich ecosystem that feeds the farms.

Back on board, the crew serves a tasting of mussels steamed in their own juices, as fresh as they can be, straight from the estuary around you. They are accompanied by water or a soft drink. For many guests this simple, delicious taste is the moment that makes the trip, and it is a good introduction before trying Galician seafood dishes in the restaurants of O Grove.