What is the fine-grained topic of the following text: See two of Canada’s most beautiful national parks, Tuktut Nogait, a remote arctic park created to preserve a scarce Caribou population, and Pukaskwa National Park, on the shores of majestic Lake Superior, where ancient fish and soaring predators struggle to maintain a foothold in their environment. Only return the topic.
Visiting Tuktut Nogait and Pukaskwa National Parks in Canada