Fig 1. Location of the study sites at the beach of Llico, south central Chile.

Before (July 2009) and after (December 2011) Maule earthquake (27^th February 2010) pictures of Llico are presented to show approximate locations (red dots) of sandy sites in front of the seawall (Sw) and the rocky revetment (Rv), as well as that of the unarmoured beach (B). Yellow arrows indicate location of a jetty in relation to low tide level. Note differences in intertidal width before and after the earthquake.