Agence France-Presse: Seen from a helicopter, the two wave power machines launched off the coast of Oporto look like sea snakes. The ‘Pelamis’ wave energy converters generate electricity from the movement of the waves. It is a clean and renewable energy. They are a world first. In time, there will be 25 Pelamis converters off the coast of Oporto. ‘This Pelamis generates the equivalent of what a wind turbine was producing five years ago, i.e. around 750 KW/H’, said Rui Barros of the Enersis company behind …