Introduction to the Polar Animal Hall: The naive penguins, one-ton sea lions and polar bears in the Polar Animal Hall make visitors feel like they are visiting the snow-capped polar world. Pass through the more than 100-meter-long undersea tunnel and enter the central area of the ocean world. Thousands of species of marine life from all over the world are displayed here. The beautiful underwater scenery has a panoramic view, allowing tourists to merge into the mysterious and vast blue ocean; the wonderful performance of the mermaid makes tourists feel relaxed and happy, and never want to leave.