Le Comptoir de la Lagune is in a residence called the gardens of the lagoon. It is a wonderful residence with views of the sea and the lagoon of Oualidiya. This restaurant is great because it faces a pool of the residence, and you can swim in it even if you aren't staying there but are just dining there. They make all types of fish, and the specialty is the oysters, but in the month of March, they had not made local oysters and oysters come from Dakhla in the south. They also serve crabs, couteaux, which are a bit like seafood, but a bit like mussels in a shell that looks like a knife, hence its name. It is very rich. It is a good price because you can eat a lot of seafood for 15 euros, and you can share several plates. They serve a fish tagine, which is like a broth with tomato and vegetable sauce, very good.
Ostrea restaurant is a little out of the village of Oualidia, in a park where oysters grow. The restaurant offers a selection of oysters throughout the year, whether or not those of Oualidia, sometimes do get to Dakhla in the south. The prices are pretty cheap compared to the price of seafood in Spain. We only spent 10 euros per person and this was with salad, bread, and soda. We had a plate with shrimp and fried calamari, and then we had other trays of seafood with oyster shells, mussels and crabs, plus a lobster. It was a shame because they cooked a lot of shrimp, but they were a little bit hard. The service is friendly, and some speak bad French so they can't really explain the sauces or composition to you. There is a a terrace on the sea, and you can also order your oysters to go, they make you a box and you open them with a bread and a lemon can go eat at the beach.