Many of the pictures I took at the beach were geology related. Here are the best:
The nearly pure quartz sands of the Alabama coast. It's squeaky clean!
Funny true story: One summer my folks rented a place at Virginia Beach for a few days and my older siblings came, too. One of my then sister-in-laws actually tip-toed across the sand because it was "dirty". She'd only been to the sugar sand beaches of Alabama and Florida before, she apparently thought all those feldspars and heavy minerals were dirt.
Future trace fossils? Bird tracks Crab borrow
rain drop impressions with human tracks
Future fossils? Shell hash at the high tide line.