Each week Britanny Ferries proposes up to three crossings to reach the Basque country. From the south of England, you embark in Portsmouth and 24 hours later you are in Bilbao, capital of the province of Biscaye in the Basque Country. From Bilbao to the beaches of the Basque coast, there is only one step.
+ informations here : www.aferry.to/bilbao-spain-ferry.htm
> To reach the French border and the sand of the Basque coast from Bilbao, you can rent a car / taxi, take a train or get on a bus!