A belief goes that if a girl can't take the pain of tattooing, she is un-marriageable, because she will never be able to deal with the pain of child birth. If a boy can't deal with the pain he is considered to be a bad risk as a warrior, and could become isolated from the tribe.
Things with flowers designs, or turtles, dolphins. This trend of Hawaiian design has then met it's match with the whole tribal tattoo movement. Tribal tattoos have been the hottest thing in the tattoo world since sliced bread or the old school WWII era Hula dancer. You see these influences have been all around us for a long time my grandpa even has one of those Hula Girls tattoos still.