Randy,
Thanks for your nice comments.
These were shot from the shore. The lake is next to my summer cottage in Sweden. I have tried to shoot from boats, but the loons here are pretty shy. When they dive they can swim very long and completely disappear out of sight. Normally, they take rounds foraging in the lake, and quite often they come past my site in the early evening when the light is good. As always, it is a matter of spending enough time. As I write this, I can actually hear the loons on the lake.