TELESCOPE, Grenada (AP) -- The old coastal road in this fishing village at the eastern edge of Grenada sits under a couple of feet of murky saltwater, which regularly surges past a hastily-erected breakwater of truck tires and bundles of driftwood intended to hold back the Atlantic Ocean. For Desmond Augustin and other fishermen living along the shorelines of the southern Caribbean island, there's nothing theoretical about the threat of rising sea levels. "The sea will take this whole place down," Augustin said as he stood on the stump of one of the uprooted palm trees that line the shallows off his village of tin-roofed shacks built on stilts. "There's not a lot we can do about it except move higher up."