The Mediterranean:
Dipping your toes into the warm clear water, the color a vibrant aqua. It is easy to see how this part of the world is known as the Cote D'Azur. Because the color of the water is so distinct and azure is the perfect color to describe it.
Rick Steves and the couple we met in Paris warned us that the beaches in Nice are rocky. Now living in the Pacific Northwest I just assumed they meant rocky. Instead the beaches contain no sand, as a budding geologist I feel compelled to go off on a tiny tangent about the definition of sand. Sand is sand because of the size of the grains. All minerals can be classified based on size ranging from silt to boulders and each has a specific size in mm. Sand is between 1/16mm and 2mm in diameter and can be made up of a variety of substances. Usually it is made up of quartz. But as I said, there is no sand on the beaches instead they are covered in what geologists would classify as pebbles and cobbles. Smooth rounded stones of varying size. And from being a huge nerd sitting under an umbrella staring at these rocks they also seem to have varying composition. Most were sedimentary but I did see a few granitic rocks as well. I am particularly curious what geologic phenomena creates a beach like this, I have some ideas but I have not looked into this more thoroughly.