The purpose of this study is to 1) describe the legal arrangements related to the crime of turtle catching perpetrators. 2) describe the countermeasures carried out by the Ditpolairud Polda NTB in dealing with the perpetrators of the crime of catching turtles. The benefit of this research is to provide insight into ideas for the development of legal science, especially regarding legal arrangements related to the criminal act of catching turtles. The data were obtained from the results of library and field research, and were processed and analyzed using qualitative methods. This research is based on library materials from the results of interviews with informants, namely the Office of Ditpolairud Polda NTB. Based on the results of research related to the legal arrangements for the criminal act of catching turtles, it is clearly regulated in the Law of the Republic of Indonesia Number 5 of 1990 wherein the Law has been regulated in Article 40 Paragraph (2), violators of this Law are threatened with a maximum prison sentence 5 years and a maximum fine of IDR 100,000,000. In the countermeasures carried out by the Ditpolairud Polda NTB in dealing with the perpetrators of the crime of catching turtles, this was carried out in 3 ways, namely Preemptive, Preventive and Repressive. The implications of this research are, 1) It is expected that law enforcement officers will be more active in providing counseling and coaching to coastal communities. 2) It is expected that law enforcement officials will routinely carry out patrols in areas prone to the crime of catching turtles 3) It is expected that law enforcement officials will take firm action by giving appropriate punishments so as to provide a deterrent effect to the perpetrators of the crime of catching turtles in accordance with applicable laws and regulations