Today I want to talk a bit about the “wrack line,” that more or less continuous line of debris left on the beach by the previous high tide. The content of the wrack line can be meager and ordinary – just a few bits of seaweed – or overwhelming and dramatic, like the 40-foot carcass of a dead humpback whale that washed up at Newcomb Hollow several years ago. But if we only investigate the content of the wrack line, big or small, I think we miss the bigger question. We tend to ask what is this,