Beaches, beaches, beaches

I happen to be in Galveston Texas, right on the beach where I have been able to watch this process of depositing happen. The waves bring up various sizes and shapes of sediment. 

•  Sand
•  Shells that have been eroded into smaller sand like sediment
•  Shards of shells 
•  whole shells
•  rocks that have been eroded in the water. 

its very interesting to see the sections of sand that have lots of shells and those that have clear sand. as well as ripple marks in the sand from the wind on the beach. I wonder if this indicates whether its sorted well or not. because you can find similar sized things in some of the same areas but then there are also sections with all the different sizes and kinds of sediment.