Which national park in Canada is known for its polar bears?

Where is the Ha Long Bay nature reserve located? Where is the Etosha National Park located? What is the name of the famous national park in Costa Rica known for its biodiversity? What is the name of the famous lake in Plitvice Lakes National Park in Croatia? What is the name of the highest peak in the Rocky Mountain National Park in Colorado, USA? In which country is the Los Glaciares National Park, a UNESCO World Heritage Site, located? What is the name of the largest lake in the Voyageurs National Park in Minnesota, USA? Which national park in India is known for its Bengal tigers and mangrove forests?