A lot of the plein air tradition in America comes from the California artists of the nineteenth century. The California coast can be very inspiring. I've had a chance to paint there a couple of times in the Newport/Laguna Beach area. Some of today's best plein air artists are based there. I'm looking forward to going back, but it's along ways away. Luckily for me, I have Michigan. The dunes on the West shore are spectacular.
Last weekend I was up North to drop my daughter off at camp and had a day to paint. I did one at Point Betsie that I'm not real happy with. But it was good practice for a larger one I'd like to do. Then I went over to a coastal lookout in Elberta. This is a view looking South.
Michigan shore, oil, 10" x 12"