The stormy waves coming ashore in Yachats were providing some great splashes as they broke on the shore.  They would crash into the rocks and send spray high into the air.  If you were further along the shore and looked back at the people closer to the rocks, they would occasionally be silhouetted against the plume of spray.  The cool thing about shooting this with a long lens is that it looks as if they are almost being overwhelmed by the waves.  Get a bit closer and they are clearly a long way from the water and in no danger of getting wet (except for a bit of the mist if you are downwind of the impact point).