«The project area covers 1 791 159 ha in the Gulf of Riga and the Irbe Strait in Latvia and Estonia. The area has high socio-economic significance. Human activities impacting this area are industry, agriculture, fishing, recreation, military use and shipping. Shipping is the most important use of the Gulf. There are many commercial harbours. The Irbe Stait is a very important international ship traffic route - the only access from the Baltic proper to the Gulf.», fra Baltic Sea Portal, prosjektside for Marmoni, EU-støttet miljøprosjekt
balticseaportal.net
«For example, in the Irbe Strait there should be more than 14913 mines, of which only 162 were disposed during 1995-2006.», fra «Workshop on 'Stakeholders interests and involvement in management planning and management of marine protected areas'» rapport fra konferanse, 8-9. februar 2007, Palanga, Litauen, fra nettstedet Baltic Sea PortalArkivert 3. mars 2011 hos Wayback Machine.
Data og kart fra geographic.org, opprinnelig fra National Geospatial-Intelligence Agency, a member of the Intelligence community of the United States of America, and a Department of Defense (DoD) Combat Support Agency.
«The Gulf of Riga is shallow, with a maximum depth of 60 m. The basin is connected to the Baltic Sea via two narrow sounds, the Muhu Sound in the north (sill depth 5 m) and the Irbe Sound in the northwest (sill depth ca 20 m).», fra Gulf of Riga: Environment and invasion history, Coastal Research and Planning Institute ved Klaipėda University
svt.se
«Den Bahamasregistrerade båten Mona Lisa gick på grund i Svorbesundet, som är huvudled från Östersjön in mot hamnen i Lettlands huvudstad Riga.», fra SVT[død lenke], publisert 4. mai 2008
web.archive.org
«For example, in the Irbe Strait there should be more than 14913 mines, of which only 162 were disposed during 1995-2006.», fra «Workshop on 'Stakeholders interests and involvement in management planning and management of marine protected areas'» rapport fra konferanse, 8-9. februar 2007, Palanga, Litauen, fra nettstedet Baltic Sea PortalArkivert 3. mars 2011 hos Wayback Machine.
