This reminds me of an early nineties book titled "THE WOMEN" by Bill Dobbins. Within that book there was a black-and-white nude of Michele Tuggle doing that exact pose! It was in the sand and she was wet, and the sand was covering parts of her body, but not the good parts. I think you can Google the image. I've still got the book. It was one of the sexiest pictures I've ever seen. To this day its still a turn on!
What a great pic/pose!!!