Microspheres In article number 2305511, De Gong and co-workers fabricate biohybrid urchin-like magnetic ZnO microspheres based on Chlorella cells via a facile and controllable biotemplated method. The urchin-like microspheres with tunable hierarchical structures exhibit excellent stability and photoelectrocatalytic activity for pollutant degradation, indicating great potentials to solve the crisis in environment remediation.