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An example of modern landscape change is shown by James and Sidney islands. Extending southward from James Island is an extensive area of shallows that reflects the once greater extent of the island. Northwesterly-directed waves generated by strong southeasterly winds in Haro Strait have eroded the glacial sands and gravels of southern James Island and redeposited them along the islands east and west shores as well into nearby deeper water. Likewise, the sediments forming Sidney Spit originated on southern Sidney Island from where they have been moved by longshore currents to form the spit.