Waikiki Beach has shrunk about a foot per year over five decades

Along the sandy sliver that is Hawaii's world-famous Waikiki Beach, waves sometimes reach all the way across the beach to touch solid land.State officials are testing a sand-pumping project in an attempt to reclaim the iconic beach after years of chronic erosion using offshore sand, without having to truck in sand from around Oahu, other Hawaiian islands or even other countries.The erosion isn't caused by heavy use from the 70,000 tourists who trample over the islands each day.The main culprit is a sand shortage caused by shoreline development, including sea walls and the loss of dunes buried