I have lived in Hawaii since I was 5 years old. I named my 4th child Kaimana. It is a beautiful name, maybe you gotta be from Hawaii to appreciate the name, & the meaning of it! I am somewhat insulted by what Wilted said about the name...
This name strikes me as surf-bummish. I don't think it's so terrible, but it sounds like a type of fish and seems like someone was trying to be cool. If I ever get a pet shark, I know what I'm going to use.