Congratulations to the photographer for the great sales effort, and to you for seeing and recognizing the similar images.Cruising World Magazine and Sail Magazine both have pictures of the same boat this month. I am surprised the photographer sold images from the same shoot to two different magazines. They are two different pictures, but, same photographer.
There is a better than even chance both magazines saved money by not asking for or even thinking about exclusivity.
They need to fill spaces between the press releases and the ads, thats pretty much it these days.