The park supports populations of many animals that are part of the traditional image of the northern Great Lakes ecosystem, including American black bear, beaver, bobcats, mink, muskrats, and otter. The park's cobble beach areas provide an excellent habitat for the federally endangered piping plover. As of 2002, approximately one-third of Michigan's nesting pairs of piping plovers were found in Wilderness State Park. One of the first sightings of wolves in the Lower Peninsula was reported along the park's shoreline by a Coast Guard pilot in 1997. In 2015, MDNR officials confirmed the presence of wolves in the Lower Peninsula.

Is it true that are there bears in wilderness state park michigan?
yes