nectophore


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nectophore

a medusoid individual connected to the upper part of the CORMIDIUM of a siphonophore and which pulsates, thus acting to propel the colony.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
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The colony can reach 7 ft (2 m) in length, although the nectophores are at most 3 mm long.