Routing in wireless sensor networks (WSNs) is an extremely challenging issue due to the features of WSNs.Inspired by the large and single-celled amoeboid organism, slime nacrack.com mold Physarum polycephalum, we establish a novel selecting next hop model (SNH).Based on this model, we present a novel Physarum-based routing scheme (P-bRS) for WSNs to balance routing efficiency and energy equilibrium.In P-bRS, a sensor node can choose the proper next hop by using SNH which comprehensively considers the distance, energy residue, and location of the next hop.The simulation results show how P-bRS can achieve the effective trade-off between routing edgewater shoes efficiency and energy equilibrium compared to two famous algorithms.