The aim of this master thesis is to present the aspects of sustainable development in the blue economy and to deal with other concepts that directly affect the promotion and improvement of the blue economy. The economic aspect explores the contribution of marine resources to economic growth and development. The ecological aspect encourages the preservation of seas and oceans and biological diversity. The socio-cultural aspect analyzes the effects of the blue economy on local communities and culture. Special emphasis is placed on the blue economy, which represents a critical element of sustainable development in the modern world, combining exploiting marine resources with environmental responsibility. Different segments of the blue economy, such as renewable energy, tourism, fisheries, maritime transport, climate change, and waste management, are explored to understand their contribution to sustainable development. The challenges of the blue economy are also highlighted, along with considering how these challenges can be overcome. Blue growth and its strategy refer to overall economic growth and goals for ever-increasing progress. Sustainable development in the blue economy should be the basis for our future and provide us with a sustainable supply of food, water and energy while reducing poverty and unemployment. Continuing to invest in sustainable practices and technologies and providing the necessary financial support are key steps towards achieving these goals.