Pictured on your left are two of the ferries that carry passengers from the Michigan mainland to Mackinac Island. I took the photograph while traveling on a different boat, and the waters in question are the northernmost of Lake Huron.
I think the image would have been more compelling had I managed to catch both water-spouting ferries in the shadow of the Mackinac Bridge, but alas: the photography gods did not permit this creative opportunity.
Even though it was hot by northern Michigan standards today (mid-80s and muggy), there were some especially cool breezes to be enjoyed on the lake. Thus, returning to the mainland meant the end of a short excursion as well as a revisiting of the summer heat.