Description: English: The hydroid Sertularella polyzonias, Mull of Kintyre, Scotland. Date: 13 September 2009, 16:39:45. Source: Own work. Author: Bernard Picton. Camera location55° 27′ 05.34″ N, 5° 31′ 14.1″ WView all coordinates using: OpenStreetMap 55.451483; -5.520583.