The
rocks on this shoreline would have been much higher many years ago. The
pounding of the waves has worn them down. The parts that are still sticking
our of the water are harder ones than those that were in between. The
softer the rocks the more quickly they
are eroded by the sea. There is a salt water swimming
pool in the picture - the straight walls are made from concrete. Despite
the pounding of the waves, seaweeds are living on the rocks. They have
a very tough fastener called a holdfast to grip onto
the rock.