Providing shelters is considered an effective method to prevent self-harm and improve the survival rate of Scylla paramamosain . In this study, four shelter groups—the shelters of which included fine sand, arched tiles, PVC pipes, and trapezoidal net cages—and one group without shelters were established to investigate the effects of shelters on S. paramamosain by calculating their feeding rate, molting rate, survival rate, and...