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Globally, 海 (海 , Hai , Hay ) is a widespread predominantly male, but scarcely female given name. The first name 海 is habitual in Macao, where it is quite a common epicene name, Vietnam, where it is quite a common primarily male, but scarcely female name, and China (explore the name in all countries). In absolute terms, the name is most common in China, Vietnam, and the United States. Likewise, 海 is the last name as well as the forename.
海 is also a name for the fictitious and mythical characters: Hay Lin , the W.I.T.C.H. character.