Historically, the canals of Aveiro connected to the lagoon (Ria de Aveiro) that flows directly out to the sea at Costa Nova. The Moliceiros would travel from the city, past the salt flats, and out toward the ocean. Today, the ecological and economic link remains. The fish served in the restaurants of central Aveiro is often the same fish caught just off the coast of .
The lagoon is also a haven for migratory birds. Flamingos, spoonbills, and plovers flock here, making the route between Aveiro and Costa Nova a paradise for nature lovers. aveiro costa nova