In the 21st century, leisure and sightseeing is a chimney-free industry with potential for development. In view of the increasing demand for leisure, health, tourism and sports, the government and the private sector have continued to promote sports and tourism in recent years. "Underwater 30m" is a diving-themed lifestyle program. Taking diving as the main axis of the program, visiting the underwater world from the perspective of the divers, introducing the marine resources with the underwater ecology as the main vision, so that all people can feel the colorful and business charm of the seabed, while diving sightseeing Industry has gradually become the driving force for regional and urban economic development.

The content of this film "Underwater Image Documentary" is based on the current underwater photography related equipment use and film and television professional underwater photography team in Taiwan. In the preliminary preparation process and the underwater photography process, the underwater photography team It is a very different environment from land shooting. The underwater shooting is more difficult than ordinary shooting. Photographers, their photography assistants and other crew members must undergo strict diving training. When the actors have underwater plays, the photography team must compile. The security guards are used to ensure the safety of the actors and underwater photography crews, while the characters are photographed and divided into wide-angle and macro-range performance techniques in response to the habitat and characteristics of underwater creatures. Underwater photography has its very special expression and special charm that cannot be copied. Underwater photography includes different categories such as ecology, archaeology, portraits, documentary, and movies. In its development history, it has experienced many revolutions, from ancient times to the present. The work covers a variety of different shooting styles. Once we have accumulated these records at different times, we will be able to identify the problems that really change the marine ecology and take action on marine conservation.