SVJETSKI DAN OCEANA Datum 8.6. Područje ekologija Izvori http://www.un.org/Depts/los/reference_files/worldoceansday.htm Linkovi http://www.un.org/Depts/los/reference_files/worldoceansday.htm http://biologija.com.hr/modules/AMS/article.php?storyid=7938 http://energetika-net.hr/ekologija/vijesti/8583