Is an ortholog of human NPR1 (natriuretic peptide receptor 1) and NPR2 (natriuretic peptide receptor 2). Exhibits guanylate cyclase activity. Is involved in several processes, including chemotaxis\; olfactory behavior\; and sensory perception of chemical stimulus. Localizes to the cell body and neuron projection. Is expressed in the body wall musculature\; the gonad\; the hypodermis\; the intestine\; and the nervous system. Human ortholog(s) of this gene are implicated in Miura type epiphyseal chondrodysplasia and acromesomelic dysplasia, Maroteaux type.