By laelaps on May 23, 2008. A horseshoe crab (Limulus polyphemus), crawling along just below the tide line. (Photographed May 17, 2008 at Cape Henlopen State Park, Delaware.) Tags Inverts Photography More like this Off to Delaware Learning my lessonI made a bit of an error this past weekend. Wanting to make better use of my camera I eschewed the automatic settings I previously relied on for one that would allow me to change the shutter speed, contrast, white balance, etc.