Abstract: The object of this research consists in the peculiarities of accounting catching of marine biological resources. Russian Federation controls the marine biological resources on the continental shelf and in the exclusive economic zone by licensing individuals and companies for usage thereof. The main issue explored here lies in the absence of legal mechanisms allowing verifiably establishing the fact, after which the catch of marine bioresources and fish or other derivative products can be considered illegally obtained (caught). The questions of improvement of legislation in the area of accounting for caught marine bioresources are justified by the growing number of violations in the area of protection of biological resources and the need for establishing active control in this sphere. The author notes that the main cause for UUU (unlawful, unreported, unregulated) fishing lies in the flaws of the normative-legislative base that would regulate the order of accounting of the catch. The existing accounting mechanisms for marine biological resources being caught does not allow timely intervention in the illegal fishing, which causes significant damages to the economic and other interests of the Russian Federation.