1. 
   Epibiont
   An epibiont is an organism that lives on the surface of another living organism. An epibiont is usually considered harmless to the host; in this sense, the relationship between the two organisms can be considered neutralistic or commensalistic. Typical epibionts are barnacles, remoras, and algae, a...
   Found op http://en.wikipedia.org/wiki/Epibiont
   
   
2. 
   epibiont
   epibiont 1. Living attached to another organism. 2. Surviving, applied to endemic species that are relics of a former flora or fauna; growing on the exterior of living organisms; living on a surface, as of the sea bottom. An antonym is hypobiotic.
   Found op http://www.wordinfo.info/words/index/info/view_unit/744/
   
   
3. 
   epibiont
   epibiontic, epibiont Living attached to another organism without any connotation of mutualism. Urchins and grazing fishes feed on epibionts of reefs and often scrape off bits of calcium carbonate; resulting in bioerosion.
   Found op http://www.wordinfo.info/words/index/info/view_unit/744/
   
   
4. 
   EPIBIONT
   one organism living on another, such as a barnacle attached to a sea turtle
   Found op http://www.seeturtles.org/1901/glossary-of-sea-turtle-terms.html
   
   

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