1. 
   nectophore
   (from the article `cnidarian`) ...order Siphonophora, free-floating colonial hydrozoans, display an even greater variety of polymorphs. These include gas-filled floats called ...
   Found op http://www.britannica.com/eb/a-z/n/21
   
   
2. 
   nectophore
   nectophore A swimming bell of a siphonophore (Hydrozoa with hollow floats).
   Found op http://www.wordinfo.info/words/index/info/view_unit/1379/
   
   

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