- Garibaldi
- the Garibaldi or Garibaldi damselfish (Hypsypops rubicundus) is a fish of the damselfish family that is native to the north-eastern subtropical parts of the Pacific Ocean. It is the official marine state fish of California and is protected in California coastal waters. An interesting feature of the Garabaldi is the ability to change its sex throughout its lifetime. This process is prompted when the ratio of males to females is out of balance. Garabaldis of the over-represented gender will change in order to make up the deficit. This process can be undergone multiple times by the same fish.
- Gas absorption and elimination
- Dissolved gases such as nitrogen are absorbed into the blood and tissues during the course of the dive. The level of saturation depends on the depth of the dive. The elimination of these gases is very important in preventing decompression sickness. The length of time required for elimination depends on the duration and depth of the dive.
- Gas Analysis
- A procedure whereby the fractions of gas in a breathing mixture are determined. Generally it is used to determine the fraction of oxygen to within 1 %, to control the effects of Oxygen toxicity. Most diving operations will analyse for oxygen only. In more complex Trimix's, it is be desirable to analyse for the inert gases as well.
- Gas Laws
- Laws that predict how gases will behave with changes in pressure, temperature and volume.
- Gas Saturation
- Gas saturation occurs when the level of dissolved gas in a particular body tissue has reached its maximum.
- Gauge pressure
- Pressure exclusive of atmospheric pressure, when diving, gauge pressure is due to the water pressure.
- GDAT
- Gorman Dive Adventures and Travel.
- Giant Stride Entry
- The most common method of entering water from a boat transom, pier, etc., where the standing diver takes a large step into the water while securely holding mask, tucking chin and bringing fins quickly together to keep himself at the surface for a controlled descent.
- GoPro
- GoPro cameras. Hero 3 Black, Siver and White. Miniture camera for all sports, above water and under. GoPro is a brand of the privately owned San Mateo, California company Woodman Labs that features "wearable" camera/camcorders such as helmet cameras that are targeted at adventure video/photography.
- GPS
- global positioning system. A worldwide system of navigation based on a ring of stationary satellites. Small, even handheld, GPS devices can be used to accurately determine speed and direction of travel, and pinpoint dive site locations.
- Granny Line
- Also known as a Gerry Line. A line which goes from the stern platform or hang bar to the anchor line.
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There are 12 scuba glossary terms listed. |
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