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palolo worm
The palolo worm or Samoan palolo worm (''Palola viridis'') is a Polychaeta species from the waters of the Pacific islands around Samoa.
==Life cycle==
Reproduction involves mass spawning at night in spring or early summer (October - November in the Southern Hemisphere). The terminal parts of their bodies drop off and float over the surface of the water, releasing sperm and eggs. The mechanisms or triggers which induce spawning such that it occurs during nights of a waning moon, continuing for several nights, are not completely known.〔
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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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