Rising out of or above water or ground; not completely submerged, especially describing aquatic plants with parts above water.
From emerse (Latin emersus) plus adjectival or past participle form. Used primarily in botanical and ecological terminology.
Aquatic plants have three life zones—fully submerged, emersed (half in-half out), and floating—and some plants can switch between all three depending on water level, which is amazing adaptability!
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