The video begins with a map of the world, and then a red shape appears on the screen. The red shape is a map of the Pacific Ocean, and it gradually expands across the screen. The red shape is a representation of the spread of the red tide, which is a type of algae bloom that can be harmful to marine life and humans. The video shows the progression of the red tide as it moves across the Pacific Ocean, highlighting the areas that are most affected. The video is a visual representation of the impact of the red tide on the marine ecosystem and the potential consequences for human health and the economy.