<Li> Columbia Bar: a giant sandbar at the mouth of the Columbia River </Li> <Li> Reefs and rocks lining the west coast of Vancouver Island </Li> <Li> Strait of Juan de Fuca </Li> <P> Shipwreck charts are studded with sites . Salvage attempts are often unsuccessful or of limited success, and physical wreckage is usually minimal anyway due to the age of many wrecks, the unpredictable weather and sea conditions, and the extensive damage often suffered by vessels at the time they were wrecked . </P>

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