Once we’re on board, the boat will leave its wake on the profile of the estuary and its islands. If a catamaran is the option chosen, it will anchor alongside authentic forests of algae, which are easy to observe from the glass at the bottom of the boat. Let us not forget that Galicia’s estuaries have one of the largest deposits of phytoplankton in the world, according to the FAO. This feature lends an exceptional quality to the water, enabling the bivalves raised in them grow with record speed. We’ll confirm this by stopping at some of the shellfish rafts, wooden platforms floating on the sea, where mussels, oysters and scallops are raised.