Made my first pass through the locks in Seattle the other day, and I was
interested to see "bottom" feeders turned 90 degrees and feeding on the
algae (or something else?) on the side of the locks, right up to the water
line. These critters were only about 3"-7" long, pretty wide at or just
behind the head and tapering quickly to the base of the tail. Can anyone
tell me what these were? I'm a lifelong landlubber and am largely ignorant
about marine life.

Jim McCoy
jfmccoy at earthlink.net
Redmond, WA