This article examines the crime of ecocide in the context of sustainable development and the right to a healthy environment, focusing on its impact on nature, ecosystems, and the climate. It explores the concept of ecocide, its effects on the environment, and the most pressing issues concerning environmental protection through the lens of ecocide crime. The significance of criminalizing ecocide in international and national legislation is emphasized. The article advocates for recognizing ecocide as a crime against humanity, acknowledging the environment as a legal subject, and strengthening ecological justice by criminalizing this offense at the international level. It underscores the urgent need for such measures as a critical legal tool for safeguarding the future of ecosystems and advancing international criminal law.