The strand line had a distinctly blue-gray hue:
When we got down on our hands and knees to take a closer look, this is what we saw:
And when I zoomed in close with my camera, we realized there were thousands of small blue-gray objects among the sand grains. (Many were the same size or smaller than the grains of sand!)
From a distance, they reminded me of "pretty little pearls." [Given these views from a very small section of the strand line, I can't even imagine how many of these were on the entire beach.]
Any guesses about the identity of these mystery objects? I'll share the answer tomorrow night.