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Airlift dredge – Dredging device using injected air to move water and entrained load up a pipe; Airlift dredging – Removing underwater sediment using an airlift pump; Air line – Tube or hose carrying a compressed air supply; Air-line diving, also known as airline diving – Basic mode of surface-supplied underwater diving
Air-driven corner filter. Aquarium filters are critical components of both freshwater and marine aquaria. [1] [2] [3] Aquarium filters remove physical and soluble chemical waste products from aquaria, simplifying maintenance. Furthermore, aquarium filters are necessary to support life as aquaria are relatively small, closed volumes of water ...
The action/adventure movie Thunderball, which used both sorts of open-circuit scuba, was released and helped make single-hose regulators popular. [132] 1966: Professional Association of Diving Instructors (PADI) was founded by John Cronin and Ralph Erickson. [133] 1968: An excursion dive to 1025 fsw was made from a saturation depth of 825 fsw ...
Freshwater aquarium. A freshwater aquarium is a receptacle that holds one or more freshwater aquatic organisms for decorative, pet-keeping, or research purposes. Modern aquariums are most often made from transparent glass or acrylic glass. Typical inhabitants include fish, plants, amphibians, and invertebrates, such as snails and crustaceans.
Alabama’s Mobile-Tensaw Delta is a more-than 400-square-mile (1,036-square-kilometer) expanse of cypress swamps, oxbow lakes, marshland, hardwood stands and rivers unusually rich in plant and ...
A scuba set is characterized by full independence from the surface during use, by providing breathing gas carried by the diver. Early attempts to reach this autonomy were made in the 18th century by the Englishman John Lethbridge, who invented and successfully built his own underwater diving machine in 1715, but though the air supply was carried in the diving apparatus, it relied on surface ...
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Protein skimmer. A protein skimmer or foam fractionator is a device used to remove organic compounds such as food and waste particles from water. It is most commonly used in commercial applications like municipal water treatment facilities, public aquariums, and aquaculture facilities. Smaller protein skimmers are also used for filtration of ...