An expatriate Cook Islander has hit upon a solution for many low-lying island countries experiencing erosion of valuable beaches and other disappearing foreshore areas caused by weather changes and coastal development. For 20 years, Don Dorrell worked on researching coastal processes here and then designing protection systems.He came up with Coastal Protection Unit and the Coastal Protection and Energy Dissipation - different sized and shaped geometric concrete blocks. Now patented in 26 countries, they've saved thousands here.