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Oceans, seas, lakes, rivers and streams hide a treasure trove of heritage - from shipwrecks and artworks to everyday objects. Today, however, these underwater artefacts are in danger, due to looting, exploitation of marine resources, climate disruption, and pollution. 

UNESCO seeks to protect and raise awareness of these traces of the past, which tell a unique tale of humanity. Our 2001 Convention on the Protection of Underwater Cultural Heritage establishes a common framework for the identification, preservation and sustainability of objects that have been immersed for at least 100 years.