Sanderlings are determined little shorebirds. They move constantly and erratically, searching for their next meal and stopping only when they sense something to eat is nearby. They change directions in a nanosecond. They showed off their determination in their search for food by plunging their heads into the surf as it roiled around them, shoving their beaks into the sand beneath the water to find food. It was rare that they emerged from the water without some sort of tiny seafood delicacy in their beaks.