Thanks to Gary Jones for sharing today’s marine-mammal sighting: Harbor porpoises! Not rare, experts say, but certainly not reported as open as their larger cousins (orcas, etc.) Last harbor-porpoise report we published was the sad saga of one found dead on Alki last March. According to this 2011 research, they were common in the area back in the 1940s, then dwindled, then started making a comeback.