Which state has the most coastline after Alaska?

Michigan has the most coastline of any state following Alaska, primarily due to its unique geographical features, which include the Great Lakes. The state's coastline encompasses over 3,200 miles, making it the longest of any U.S. state except for Alaska. This extensive coastline is attributed to the fact that Michigan is bordered by four of the five Great Lakes—Lake Superior, Lake Michigan, Lake Huron, and Lake Erie—along with numerous islands and bays.

The Great Lakes themselves contribute significantly to the amount of shoreline, with Michigan having the largest share of any state, allowing for a diverse range of ecosystems and landscapes. This geographical layout significantly enhances the potential for recreational activities, tourism, and natural resources related to these water bodies.

In comparison, while other states like Maine, California, and Hawaii have considerable coastlines, they do not approach the expansive coastline that Michigan possesses due to its unique location and the vastness of the Great Lakes.