Underwater

Underwater refers to the region below the surface of water where the water exists in a natural feature (such as an ocean, sea, lake, pond, or river) or a manmade feature (such as a swimming pool). The term underwater is also used to describe activities conducted under water such as underwater diving, underwater archaeology, and underwater photography.

Underwater Environment

The underwater environment is hostile to humans in many ways. It is a low-light environment, with the light diminishing rapidly with depth. The pressure increases by 1 atmosphere for every 10 meters of water depth. The temperature decreases with depth, and cold water can be a significant hazard. The underwater environment also has reduced gravity due to buoyancy.

Underwater Activities

There are many activities that can be conducted underwater, including underwater diving, underwater archaeology, underwater photography, underwater videography, and underwater construction. These activities require special equipment and training to overcome the physical challenges of the underwater environment.

Underwater Diving

Underwater diving is the practice of descending below the water's surface to interact with the environment. It is done for various purposes including scientific research, commercial diving for work purposes, recreational diving, and military diving.

Underwater Archaeology

Underwater archaeology is the study of human history through the excavation and analysis of artifacts found underwater. This can include the study of shipwrecks, submerged cities, and other underwater archaeological sites.

Underwater Photography

Underwater photography is a popular hobby and profession for many divers. It involves the taking of photographs while being submerged underwater. It is a challenging activity due to the specific physical properties of water and light.

Underwater Videography

Underwater videography is the art and science of taking video footage underwater. It is used in scientific research, in the film industry, and in the creation of documentaries about the underwater world.

Underwater Construction

Underwater construction is a type of construction that takes place below the surface of the water. It is used in the building of bridges, tunnels, dams, and other structures.

See Also

• Scuba diving
• Submarine
• Underwater habitat

Underwater Resources
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