This was taken in September 2001.

You can actually see this tree in Google's satellite shot of the lake. This is the one starting on the western shore, in the north-west corner of the lake. The other downed tree, sneaking in on the left side of my picture, is visible in the satellite shot, too.

So, through the magic of Google, you can see exactly where I stood to take this picture, five years ago.

This guy lives in the Boston Aquarium.