The Supreme Court on Thursday upheld an earlier ruling by an appeals court to confiscate four dolphins that can allow the marine mammals to be set free into the wild.Justices confirmed the high court\'s ruling and sentenced the owner of the dolphins who ran a tourist attraction near Jungmun Beach on southern Jeju, to eight months in prison, suspended for two years. The owner identified only by his surname of Heo, will also have to pay a fine of 10 million won (US$9,000).