Loons make for tough portrait subjects since they don't often crane their elegant necks up. Luckily this guy bucked that trend.
This was from the kayak. He/She was just going over the crest of a wave. That created the foreground blur. Another distant wave on the other side
of the shallow trough gave me the background blur.
Canon 600mm f/4 IS II on EOS 5D Mark IV
1/5000 at f/5.6, ISO 400
Processed in LR CC using only standard sliders