Of
course Swedish, Danish and Norwegian are considered different
languages, but internationally they are so close that they in fact are more to
regard as dialects. Many dialects in other languages are so different that it is
impossible for two persons speaking two different to be
understood.
Finnish is also spoken in Norway (Finnmark county where several official
signs are in Finnish ("Kvensk") language), not including all
other tongues (Urdu, Sami etc.) which also have a major
position.
Unfortunately there are no Swedish Estonians left on Dagö Is. anymore.
Everybody evacuated back to Sweden at World War II. Only some place names
remains after all those centuries with Swedish colonisation of the Baltic
countries.
Jan