Fil:Ferry at the Gulf of Izmit.jpgYou may select the license of your choice. English URL: https://commons.wikimedia.org/wiki/user:Gulf_of_Astacus author name string: Gulf of Astacus Wikimedia
Fil:Passing the Gulf of İzmit, Turkey.jpgpanoramio.com/user/8490907?with_photo_id=113601519 operator: Panoramio described at URL: https://web.archive.org/web/20161101081250/http://www.panoramio.com/photo/113601519