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island in Lake Ann, Washington
An island within Lake Ann in North Cascades National Park, Washington, U.S. Islands are areas of land smaller than a continent and entirely surrounded by water.
island
geography
- Related Topics:
- coral island
- island arc
- cay
- archipelagic apron
- chinampa
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island, any area of land smaller than a continent and entirely surrounded by water. Islands may occur in oceans, seas, lakes, or rivers. A group of islands is called an archipelago. Islands may be classified as either continental or oceanic. Oceanic islands are those that rise to the surface from the floors of the ocean basins. Continental islands are simply unsubmerged parts of the continental shelf that are entirely surrounded by water. Many of the larger islands of the world are of the continental type. Greenland (840,000 square miles [2,175,000 square km]), the largest island, is composed of the same ...(100 of 458 words)