Comparing the records of fishing communities made in the sixteenth to twentieth centuries to the archaeological evidence of the sixth millennium BP, the authors propose a sophisticated prehistoric network for the coastal people of northern Chile. Residential seashore settlements link both along the coast to temporary production sites for fish, and inland to oasis-based providers of products from the uplands and salt flats. Sharing values and kinsfolk, the coastal communities must have travelled extensively in boats which, like their modern counterparts, made use of floats of inflated sealskin.