Bouguereau couldn't have known much about swimming in the sea. The waves are far too rough here. http://upload.wikimedia.org/wikipedia/commons/thumb/4/4e/William-Adolphe_Bouguereau_%281825-1905%29_-_The_Wave_%281896%29-2.jpg/800px-William-Adolphe_Bouguereau_%281825-1905%29_-_The_Wave_%281896%29-2.jpg