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neuston
Neuston is the collective term for the organisms that float on the top of water (epineuston) or live right under the surface (hyponeuston). Neustons are made up of some species of fish (see flying fish〔(The Sea Surface and Global Change by P. S. Liss, Robert A. Duce )〕), beetles (see whirligig beetle), protozoans, bacteria and spiders (see fishing spider and diving bell spider). Collembola in the genera Podura and Sminthurides are almost exclusively neustonic, while Hypogastrura species often aggregate on pond surfaces. A water strider, ''Gerris'', is a common example of an insect that supports its weight on water's surface tension.
==Other uses of the word==
By extension, the term may also refer to non-organismal floating aggregations (see, ''e.g.'', Great Pacific Garbage Patch).
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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