Due to inadequate facilities for undertaking effective monitoring control and surveillance (MCS) illegal fishing activities are prevalent. In marine fisheries, the most common incident is fishing in undesignated fishing ground. Other offences are contravention of the reporting procedure, over limited fishing day, transhipment at the sea and encroachment of fishing vessels. In inshore fisheries and inland fisheries, fisher can easily fish using traditional method everywhere which water exist. Poverty and lack of knowledge drives illegal fishing in these fisheries. DOF uncover the IUU fishing because of lack of manpower, difficult transporting and long and vast area.