By Damien McGuinness
BBC News, Riga
**Leaders from Baltic countries are meeting in the Finnish capital Helsinki to discuss how to clean up what is said to be the world’s most polluted sea.**Three years ago the nine countries with a Baltic coastline set the goal of restoring the sea to health by 2021.
Environmentalists fear a planned underwater gas pipeline from Russia to Germany will kill marine life.
In the early 1990s Russia’s military allegedly dumped chemical waste into the sea. Russia denies the claims.
Russian Prime Minister Vladimir Putin is among those attending the Helsinki summit.
According to Greenpeace, the Baltic Sea is still so toxic that they advise pregnant women to avoid eating fish caught there.
With more than 90 million people living around the Baltic Sea, it is crucial that the leaders in Helsinki come up with some concrete measures.
The objective to clean up the Baltic within the next 10 years has been set. Now governments and businesses just need to decide how they are going to do it.