Answers

2015-06-02T13:59:24+05:30
There is only one world ocen 

historical ocens are :
-Artic, atlantic,pacific,indian

five ocens are there (modern day ocen names ) :-  
arctic ocean, atlantc ocean, indian ocean, pacific ocean, southern ocean
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2015-06-02T17:04:49+05:30
Arctic, pacific,atlantic,indian,southern
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