movie where girl on island removes top to flag down ship

Two small children and a ship's cook survive a shipwreck and find safety on an idyllic tropical island. Soon, however, the cook dies and the young boy and girl are left on their own. Days become years and Emmeline and Richard make a home for themselves surrounded by exotic creatures and nature's beauty. But will they ever see civilization again?

In the Victorian period, two British children survive a shipwreck in the South Pacific. After days afloat, they are marooned on a lush tropical island in the company of kindly old sailor. Together they survive solely on their resourcefulness and the bounty of their remote paradise.