Stripes, seals and a ghost

He sat in the chair looking out the window, rocking and as he rocked he thought that he was in time with the waves crashing on the rocks below. The waves lined up in stripes to the horizon. Each one grew as it came to shore and as it hit with force on the rocks, large ghostly sheets of foam would splatter and rise, as the resting seals would scatter and swim from where they had been sleeping in the sun.