| eionet.eu.int | European Environment Information and Observation NETwork (EIONET) |
| helcom.fi | HELCOM - Baltic Marine Environment Protection Commission |
| eppo.org | Home |
| fgov.be | Federale Diensten Voor Het Leefmilieu - Services FÉdÉraux Pour Les Affaires |
| env.cz | Ministry of Environment of Czech Republic |
| dmu.dk | National Environmental Research Institute |
| swing.be | Globe European Union |
| fimr.fi | Boing - Eutrophication in the Baltic Sea |
| www.ee | Baltic 21 Network. An Agenda 21 For The Baltic Sea Region |
| vtt.fi | Baltic Sea Marine Environment Bibliography And Database |
Germany , Berlin , Berlin