SUMMARY
The precautionary principle, invoking the notions of risk, scientific uncertainty and irreversible damage, takes the solution of the environmental issues of the global risk society to the legal domain. Its application in international law has evolved significantly, especially with respect to the protection of the marine environment. This principle, which was much ignored in its practical application, is gradually being used in international environmental protection. The purpose of this paper is to analyze how the jurisprudence of the ITLOS has contributed to the development and application of the precautionary principle for the protection of the marine environment and how the International Tribunal for the Law of the Sea contributed to the development of this principle in international law. Thus, although we are still not able to safely say that the precautionary approach is included in international law as an unchallenged principle, it has been given great steps over the last few years in this direction. Particularly with the contributions of the international jurisprudence of the ITLOS, the precautionary approach is evolving and becoming an autonomous principle, with less uncertainty and subjectivity that caused so much apprehension for the States and doubt in the doctrine.