Ice cubes don't increase the water level in your cup as they melt, so why are melting icebergs raising the oceans?.
Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/melting-icebergs-boost-sea-level-rise
[2] http://admin.indiaenvironmentportal.org.in/category/author/kate-mcalpine
[3] http://admin.indiaenvironmentportal.org.in/category/journal/new-scientist
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/climate-change
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/climate-science
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/global-warming
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/sea-level-rise