The sea itself did not come up in an even line but followed the irregularities of the shore, which the perspective of the picture increased still further, so that a ship actually at sea, half-hidden by the projecting works of the arsenal, seemed to be sailing across the middle of the town; women who were gathering shrimps among the rocks had the appearance, because they were surrounded by water and because of the depression which, after the ringlike barrier of rocks, brought the beach (on the side nearest the land) down to sea-level, of being in a marine grotto overhung by ships and waves, open yet unharmed in the path of a miraculously averted tide.