Today around 12:30 at the very end of Peninsula B, a spot where I've never seen this type of bird before. I was walking to the end of Peninsula A, when I looked across the gap and saw the sandpiper sunning itself on an algae-covered rock. Came back around and was going out B when I ran into Rob Prontack, and we both walked out and found the bird actively feeding among the rocks just off the point. We watched for about 15 minutes and noted that instead of flying from rock to rock, it would swim and seemed comfortable doing so. Probably a first-winter bird judging by the white-edged tertials. I took a few not-very-good photos.