In the final part of our three-part series, Voices Along the Herring River, we hear from Mike Parlante. He’s an oysterman. As a child in Wellfleet, he explored the estuary from end to end. And as a young man, he became involved in efforts to keep the existing river clear of debris, to allow herring to continue making their annual journey upstream to spawn. He believes much can be done to improve the Herring River using just simple tools, shovels and rakes, and a respectful attention.