"The gentle swaying of kelp forests belies the immense hydraulic pressures they've evolved to endure. The waves that crash over them transfer huge amounts of energy—an average of 36kW/m with three-foot swells. Now, a green energy firm (BioPower) is banking on this sway to run arrays of Megawatt generators of the coast of Victoria."
Photo details: The wake after the ferry to Fanø, Denmark. Malene Thyssen, 2004, Gnu Free Document License. http://commons.wikimedia.org/wiki/File:Boelge_stor.jpg