It’s always fun observing these small birds. They are walking up and down the beach. Most of the time they are in the surf zone searching for food between the stones, the washed up algae and other stuff. Often, it’s quite hard to see them properly because they are well camouflaged between all this stuff.
Take care!
MyBlog - solaner 
He looks like he’d blend easily with a pile of stones.
Yep, camouflage is a trick to survive