In several cases of underwater research (by geologists, biologists, archaeologists, engineers, etc.) the mapping of underwater natural and cultural features is essential for documentation, presentation, spatio – temporal analysis or monitoring purposes. The simplest way for an underwater survey is the on-site diving which requires proper training.
The design, the planning and the accomplishment of a dive for the recording of marine features combines a wide body of knowledge and skills beyond the basic ones that are needed for a safe diving tour. The application of mapping methodologies, the use of special equipment and the coordination of a diving team before, during and after the underwater survey are defining the quality of data that will be acquired.