This pretty sea-born name was used to dramatic effect by Shakespeare in his play Pericles for the virtuous princess who says she is "Call'd Marina, for I was born at sea."
Marina was an epithet of Venus, and there was more than one saint of that name. It was used in Britain from as early as the fourteenth century.
Although it reached as high as Number 219 in 1994, Marina never had the trendy feel of cousins Melissa and Marissa. It's now very popular in Spain--just outside the Top 25.
A prominent current bearer is Marina Abramovic, widely publicized New York-based Serbian performance artist. And actor Matt LeBlanc chose the name for his daughter, Marina Pearl.