「岛屿」或「岛」是指四周拨水面所包围个面积小于澳大利亚大陆个陆地。勒狭小个地域里向有2个或以上个岛屿，即成「岛屿群」，大规模个岛屿群畀称作「群岛」或「诸岛」，列状排列个群岛即为「列岛」。
成因
从成因浪来看，岛可畀分为以下三种类型：
- 火山岛
- 大陆岛
- 珊瑚岛。
别样
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