Worried about sharks in Lake Michigan? Here’s how to survive a shark encounter in the Great Lakes while keeping your toes intact.

Now, with the earlier-than-usual freshwater whale migration wrapping up just last week—spotted as far south as Racine—scientists are predicting a more active and populous shark season than in previous years.

Overview The remote 70-mile Sawtooth Wilderness Loop trail in Idaho is worth the effort. There is lots of water access and suitable camp...