In 1986, I went swimming in the Caspian (Sea, Lake, Ocean). My wife and I were staying in Baku, "the windy city." At that time there were many interesting sights to see in the area. I chose the swim. However, much to my surprise, swimming in the Caspian was like swimming in an oil slick. Everything in that geographic area (Azerbaijan) looked old, relics from the past, especially the oil derricks. I just assumed that nobody cared much about pollution problems and continued on with the tour.
Barry H. Dubner, The Caspian: Is It a Lake, a Sea or an Ocean and Does It Matter? The Danger of Utilizing Unilateral Approaches to Resolving Regional/International Issues, 18 Penn St. Int'l L. Rev. 253 (2000).