A sand dune is a wonder of nature.
The interaction of the physical and plant worlds evolved over time to a system which prevents erosion of a beach.
Left undisturbed, with all factors as they developed, erosion of a beach would be minimal.
The marram grass, sea oates and other beach plants, help to keep the soil in place in a delicate balance with the physical world.
Then there are the catastrophic storms, the high seas and winds that destroy the dunes and allow the sea to move further inland. In the past year, students of the environmental program at the island university worked to restore dunes to the Cavendish Beach area of Prince Edward Island which had seen such destruction.
For dunes to develop, they require something which acts as a barrier to block beach sand which blows around in high winds. In nature, seaweed can be such a barrier.
When people help the process, they make use of old trees to aid the accumulation of sand. In addition, plugs of cultivated marram grass can be transplanted to areas where it has been destroyed by human activity as well.
The natural beauty of the dunes is something to behold.
The wind blowing over the grass creates a green wave which often has various shades of green due to the different plants.
Its gentle sound blends with that of the ocean to create beach music, especially if the wind is not too high. The dunes, as much as the sand, the water and the breeze, make this setting my favourite place on earth.