The Beach Christmas Style is a song from the Wiggly, Wiggly Christmas video where the Wiggles, Henry the Octopus and Santa Claus build a sandcastle.
The Wiggles are running to a sand space. They build a sandcastle and dance around. Henry and Santa Claus help as well. They finish their sandcastle and show it to the audience. Then the scene fades to Jeff sleeping, revealing it was his dream.
(NOTICE: If you play it reversed, it will show them wrecking the sandcastle down)