The poem “On the Shore” by Susan Coolidge is a beautiful and evocative piece that captures the wonder and joy of childhood. The poem describes a young child playing on the beach, building castles in the sand and watching the waves roll in. The child's imagination is sparked by the natural world, and they see all sorts of wonderful things in the sand and the sea. The poem is full of vivid imagery and sensory details, and it creates a strong sense of place and atmosphere.