The Estuary of Bilbao (Spanish: Ría de Bilbao / Basque: Bilboko Itsasadarra) lies at the common mouth of the rivers Nervion, Ibaizabal and Kadagua, that drain most of Biscay and part of Alava. It is a large estuary that extends from Bilbao to the Abra bay, a widening that makes the final transition between river and sea. It hosts the port of Bilbao in all its extension though the Harbour Authority has recently restored most of the upper shores to Bilbao and other municipalities for their urban regeneration. The harbour is now being displaced to the exterior, to the coastline of Santurtzi and Zierbena. Estuaries and coastal waters are among the most productive ecosystems on Earth, providing numerous ecological, economic, cultural, and aesthetic benefits and services. ... Basque (in Basque: Euskara) is the language spoken by the Basque people who inhabit the Pyrenees in North-Central Spain and the adjoining region of South-Western France. ... The river Nervión runs through the city of Bilbao, Spain into the Bay of Biscay. ... Vizcaya province Vizcaya (Basque Bizkaia) is a province of northern Spain, in the northwestern part of the autonomous community of the Basque Country. ... lava (Basque Araba, Spanish lava) is a province of northern Spain, in the southern part of the autonomous community of the Basque Country. ... Bilbao (Basque: Bilbo) in the North of Spain, is the largest city in the Basque Country and the capital of the province of Biscay (Basque: Bizkaia). ... Abra is a landlocked province of the Philippines in the Cordillera Administrative Region in Luzon. ... The River Thames in London River running into Harrietville Trout Farm A river is a large natural waterway. ... Sunset at sea Look up Sea in Wiktionary, the free dictionary Look up maritime in Wiktionary, the free dictionary. ... General Information Founded June 15, 1300 Coordinates - Latitude - Longitude 43º 22 43 N 03º 04 57 W Area - Land - Water 313 has. ... Santurce-Santurtzi is a port in the province of Bizkaia, in the autonomous community of Basque Country, Spain. ... Zierbena is a town located in the province of Bizkaia, in the autonomous community of Basque Country, in the North of Spain. ...