We approach the analysis of the domestic economy of the coastal groups of Cobija, considering hunting, fishing and gathering as dynamic subsistence strategies, with a particular configuration during the late precolumbian periods. We propose the existence of specialized fishermen, dedicated to generating a surplus of fish with help from certain technologies such as metal hooks and cotton nets. This surplus was distributed into the highlands and coastal communities in the context of a strong economic integration in Atacama during the late periods. We based our analysis of the domestic deposits in the study of the depositional patterns of daily remains and the functional analysis of the associated instruments or tools. Furthermore, we discuss the nuances of their economic practices in relation to the documents written during the colonization of these territories.