Coastlines could be protected by invisibility cloak

Scientists at the University of Liverpool have tested an 'invisibility cloak' that could reduce the risk of large water waves overtopping coastal defences

Mathematicians at Liverpool, working with physicists at the Centre National de la Recherche Scientifique (CNRS) and Aix-Marseille Universite have found that coastal defences could be made 'invisible' when water is guided through a special structure called metamaterial. Metamaterial was first invented by Sir John Pendry [Physics] at Imperial College London where scientists discovered that this unique structure could bend electromagnetic radiation - such as visible light, radar or microwaves - around a spherical space, making an object within this region appear invisible.

http://www.sciencecentric.com/news/article.php?q=08100515