My husband was a military diver and taught me to snorkel. He said in all honesty he prefers snorkeling - you see more around the reefs than you do in the deep.
Never been anywhere near Norway, Denmark or Sweden or Estonia but my husband has travel a lot more than I have. For about 20 years after he retired from the army at 41 he mostly traveled - for some years as many as 11 months.
Since we got married in 2009 we've been traveling together. I've got a good bit under my belt for 2 years, but no where near so here have. I'm a traveling lightweight compared to some.
Hope to have a lot more under my belt though before the end of the year!