The beaches looked expansive, and althought I did not get into the water, nor walk on the sand, the hues on the water, and in the sky, on a clear day were stunning.
We saw this while a friend (a fellow member of the Amateur Astronomers Association) and I set up solar telescopes on the concrete before the beach (with permission from the park, of course) and entertained everyone around us with views of sunspots and prominences.
At night, this place has some of the best skies for astronomy in NYC, and barring the sand and salt, which can be an inconvenience, observation conditions are great, and we were able to show people planets, once the Sun went down.
Sunbathers, cyclists, swimmers and other beach goers looked like they were having a good time, and they were a jolly bunch to talk to about sports, astronomy, and physics.