I recently spent a day harvesting clams with Chad Coffin on Maquoit Bay in Freeport. It was hard work and good fun. I’ve walked the muddy shores opposite my house often since moving here last year. It can be a challenging place to lead my son, who is 2, because parts of the shoreline between the upper rocks and the water look stable and almost rocky, but are actually slick and muddy. I finally learned why when Chad showed me that these areas of concentrated mud are actually marsh where green crabs have built nests and killed the native grasses, leaving only the slick surface in its place. Here are a few images, with more to come.