Changing Seas is a public television series produced by WPBT2 in Miami, Florida. Narrated by well-known voice talent Peter Thomas, this series takes viewers on an exciting adventure to the heart of our liquid planet. The oceans cover roughly 70 percent of the earth`s surface and they contain 97 percent of the world`s water supply. Nevertheless, only five percent of their vast expanse has been explored - leaving in secret a deep, liquid wilderness yet to be discovered. Regardless, the oceans have long played an important role in people`s lives. Currently, more than half of all Americans live within 50 miles of the coast, and that number is rising. It is estimated that by 2025 more than 75 percent of Americans will live along the country`s shorelines. Coastal and marine waters support 28 million jobs and draw 189 million tourists a year.