"Underwater Cultural Heritage in the Arab State RegionUnderwater Cultural Heritage (UCH) is defined by UNESCO as “all traces of human existence having a cultural, historical or archaeological character which have been partially or totally under water, periodically or continuously, for at least 100 years such as: i. sites, structures, buildings, artefacts and human remains, together with their archaeological and natural context; ii. vessels, aircraft, other vehicles or any part thereof, their cargo or other contents, together with their archaeological and natural context; and iii. objects of prehistoric character”1.This definition relates primarily to the age and environmental conditions of the deposit, i.e., the remains must have existed fully or partially “underwater” for at least 100 years, regardless of their type, nature, or the culture to which they belong. Once these core elements have been confirmed, the archaeological material can be defined further according to one or more specific criteria: - chronology – the time period the remains date from; - region – the geographical area where the remains were found; - typology – the physical categorisation of the remains, e.g., pottery, animal bone, stone etc.It is important to recognise that while the above criteria will remain constant, the “underwater” nature of the archaeological remains is subject to change, as a result of either human or environmental intervention. For example, many sites where prehistoric activity took place on land, usually close to ancient shorelines, are • 1 - UNESCO. 2001. Convention on the Protection of the Underwater Cultural Heritage. Paris: Records of the General Conference, 31st ses-sion, Article.
Underwater Cultural Heritage in the Arab State Regionnow submerged due to rising sea levels. Similarly, items such as swords, deposited in lakes or rivers as part of past rituals, were made and used on land. These sites and artefacts have therefore come to meet the definition of “Underwater Cultural Heritage”. The opposite process is also possible: a shipwreck, for example, or other material remains lifted from the seabed and placed in a museum would lose its status as UCH. This nuance tells us that UCH is not necessarily a constant scientific term. It relates to the underwater environment in which the material culture is located rather than any inherent archaeological or cultural attribute2. That is not to say that the material culture’s underwater location is not important: on the contrary, the underwater context reveals changes in use, condition and meaning over time. The physical changes that the underwater environment can cause, such as corrosion or decay, and the natural, social and ideological changes that underwater locations can reflect, therefore, are vital parts of a site or object’s life history. The underwater location is also a key factor in determining which scientific techniques and methods to use when dealing with this type of material culture for purposes of exploration, research, documentation, excavation, conservation, presentation or public display. Thus, the study of UCH usually requires the use of tools and techniques that differ from those employed on terrestrial archaeological sites3. For this reason, UCH is frequently mentioned in association with underwater archaeology, i.e., archaeological work, such as excavation, recording and analysis, that takes place on partially or fully submerged sites. Underwater archaeology is governed by the same scientific principles and standards as archaeological work on land but is tailored to the specific challenges of underwater conditions4. The term “underwater archaeology” is not, therefore, a sub-discipline of archaeology. Instead, it is a technical term referring to a specific set of tools and techniques used in conducting archaeological work underwater, within the wider framework and principles of archaeological research."