According to an atlas prepared by the United Nations, about 44% of the human population lives within of the sea . Due to its importance in society and its high population concentrations, the coast is important for major parts of the global food and economic system, and they provide many ecosystem services to humankind. For example, important human activities happen in port cities. Coastal fisheries (commercial, recreational, and subsistence) and aquaculture are major economic activities and create jobs, livelihoods, and protein for the majority of coastal human populations. Other coastal spaces like beaches and seaside resorts generate large revenues through tourism.
According to an atlas prepared by the United Nations about 44% of the human population lives within of the sea  Due to its importance in society and its high population concentrations the coast is important for major parts of the global food and economic system and they provide many ecosystem services to humankind For example important human activities happen in port cities Coastal fisheries (commercial recreational and subsistence) and aquaculture are major economic activities and create jobs livelihoods and protein for the majority of coastal human populations Other coastal spaces like beaches and seaside resorts generate large revenues through tourism