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Scuba

S.C.U.B.A. = Self Contained Underwater Breathing Apparatus. Here is all the information you need to learn and be safe while enjoying this great sport. Explore the last frontier and uncharted depths in the S.C.U.B.A. category.

999 Questions

Why do scuba divers form air bubbles in their blood stream?

When diving, scuba divers breathe gas under pressure. The greater pressure causes the nitrogen in the breathing gas to dissolve in their bodily tissues (the body metabolises the oxygen).

When the diver ascends from depth, the pressure is reduced, and so the gas comes out of the tissues and into the bloodstream, where the diver expels it through his lungs. Normally these bubbles are very small (sometimes called "micro" bubbles or "silent" bubbles) and present no risk to the diver.

Normal off-gassing in this was is not harmful, but if a diver stays too deep for too long, the rapid release of gas can form larger bubbles which can cause decompression sickness. In minor cases this can cause discomfort and localised swelling, which can normally be resolved with oxygen. Severe cases can lead to permanent tissue damage, paralysis and even death. This is why divers are trained to understand no-decompression limits and to utilise tables or dive computers to keep them safely within margins.

In a burnt forest a scuba diver was found up a tree how did it get up there?

The helicopter bucket picked him up while he was scuba diving 20 MILES away from the forest he didn't even realize it until he was doing a backstroke in a bucket 300 miles in the freaking air and when they opened the bucket door the water came out and so did he :( I feel so bad for him Smh..

What is the cheapest small submarine for one or two passengers you can buy?

Personal submarines like the Triton are arguably the best for one or two passengers, but it depends on your lifestyle as to whether or not you consider it cheap or not - $2-$3 million.

How often should a scuba diver equalize during a descent?

As often as he/she feels that is necessary. You'd definitely want to start at the surface. If you're looking for a number, every three feet.

What causes decompression for divers?

Decompression is where you de-compress or return to the surface or shallower water. Under pressure, gasses dissolve into the blood. Sometimes decompressing quickly can mean that these gasses cannot come out of your lungs easily and the result on your body is similar to opening a bottle of carbonated drink. These bubbles are very dangerous and can cause decompression sickness. also known as the bends or caisson's disease. This can be avoided by not going very deep or staying down too long and returning to the surface slowly.

When a diver enters the water is the force of the water opposite to the velocity of the diver?

Yes, when a diver enters the water, the force of the water acts opposite to the velocity of the diver. As the diver descends, the water exerts a drag force that opposes the upward motion of the diver, slowing them down. This resistance is a result of the water's density and the shape of the diver's body, which together create a force that works against the diver's momentum.

Why do scuba divers exhale slowly as they ascend to surface?

The First Stage ..( the bit on the tank) of a diving regulator senses the pressure exerted on the regulator ( and also on the body) to see how much it is being squeezed, it then compensates for the pressure by filling your lungs with more air than they could hold on the surface BUT because the lungs are being "squashed" the air fills your lungs like normal. The only potential problem comes when you ascend..because you have too much air in your lungs as it starts to expand, it could overinflate your lungs to the point they literally blow up!

How much did the first scuba diving suit weighed?

The first scuba diving suit, developed in the early 19th century, typically weighed around 200 pounds (90 kilograms). This heavy suit was made of materials like metal and thick rubber to withstand water pressure, and it included a helmet connected to an air supply. Its considerable weight made it cumbersome for divers, limiting mobility underwater. Advances in design over the years have since led to much lighter and more efficient scuba gear.

Can you dive twice on the smae tank of air?

Diving twice on the same tank of air is generally not recommended due to the risk of residual nitrogen buildup in the body from the first dive. Each dive increases the likelihood of decompression sickness, especially if the second dive is deeper or longer. However, if proper surface intervals and dive tables or computers are utilized, it can be done safely under certain conditions. Always prioritize safety and adhere to diving guidelines.

What eats golf ball sponges?

Golf ball sponges, scientifically known as Ircinia felix, are primarily preyed upon by certain species of fish, sea turtles, and some invertebrates. These organisms feed on the sponge for its nutrients and energy. Additionally, some marine herbivores may consume parts of the sponge or the microorganisms that inhabit it. Overall, the sponge's tough texture and chemical defenses can deter many predators, but it still has a few natural enemies in its ecosystem.

Why is lead used as a scuba diving belt?

We all float. Wearing a neoprene (rubber full of bubbles) wetsuit makes SCUBA divers really floaty!!!! SCUBA divers wear lead belts to counteract bouyant force (see below). If they didn't wear lead belts they would never be able to get and stay underwater. SCUBA divers have to learn the specific amount of lead weight they need to carry. Their are numerous factors that affect SCUBA divers including type of wetsuit worn (a 7mm wetsuit is a lot more floaty than a 3mm wetsuit), body mass, equipment configuration, etc. Most usually start at about 10% of their body weight but with practice, they are able to drop this to 5% and even less. From Wikipedia, the free encyclopedia The forces at work in buoyancy In physics, buoyancy (BrE IPA: /ˈbɔɪənsi/) is the upward force that keeps things afloat. The net upward buoyancy force is equal to the magnitude of the weight of fluid displaced by the body. This force enables the object to float or at least seem lighter.

What is the deepest scuba dive by a us navy diver?

The deepest scuba dive by a U.S. Navy diver was achieved by Lieutenant Don Walsh and Jacques Piccard in 1960 when they descended to the bottom of the Mariana Trench in the bathyscaphe Trieste. However, for pure scuba diving, the record is held by U.S. Navy diver Scott Carpenter, who reached a depth of 1,000 feet (304.8 meters) in 1969. This dive was performed using a specialized mixed gas and advanced diving equipment.

You dive to 59 feet for 22 minutes. After a 30 minute surface interval you plan to dive to 50 feet. What is your maximum time allowable for the second dive?

To calculate the maximum allowable time for the second dive to 50 feet after a 30-minute surface interval, you need to consult a dive table or computer. Generally, a dive to 50 feet allows for a maximum time that typically ranges from 60-90 minutes, depending on the dive table used and the depth of the first dive. Given the first dive was to 59 feet for 22 minutes, and considering no residual nitrogen buildup, a safe estimate for the second dive would likely be around 60-70 minutes. Always refer to the specific dive table or computer being used for accurate limits.

Where does the saying ducking and diving come from?

The phrase "ducking and diving" originates from the sport of boxing, where fighters must evade punches by ducking low and quickly moving side to side—akin to diving. Over time, it has evolved to describe someone who skillfully avoids difficulties or dangers in various contexts, not just in boxing. The imagery suggests agility and quick reflexes in navigating challenges.

How often should i have my diving equipment checked?

Diving equipment should be checked at least once a year by a certified technician to ensure safety and functionality. Additionally, it's important to inspect your gear before each dive for any visible signs of wear, damage, or malfunction. If you've been on a dive trip or have not used your equipment for an extended period, getting it checked more frequently is advisable. Regular maintenance and servicing can prolong the life of your equipment and enhance your diving experience.

How was the world impacted by scuba gear?

Scuba gear revolutionized underwater exploration and research, enabling divers to access and study marine ecosystems in unprecedented ways. This technology has facilitated advancements in marine biology, archaeology, and environmental conservation by allowing scientists to document and protect underwater habitats. Additionally, scuba diving has become a popular recreational activity, contributing to tourism and raising awareness about ocean conservation. Overall, scuba gear has enhanced our understanding of the underwater world and fostered a greater appreciation for marine environments.

Does darieth chisolm scuba dive?

There is no publicly available information confirming whether Darieth Chisolm scuba dives. As a television personality and entrepreneur, she may engage in various activities, but specific details about her scuba diving experiences are not widely documented. To find the most accurate information, it's best to refer to her official social media profiles or interviews.

What pollution is made by scuba diving?

Scuba diving can contribute to pollution primarily through physical disturbances to marine habitats, such as coral reefs and seafloors, caused by divers' fins and equipment. Additionally, accidental discharge of chemicals from diving gear, such as anti-fogging agents or sunscreen, can contaminate water and harm marine life. Waste generated by divers, including food wrappers or plastic, can also contribute to ocean pollution. Responsible diving practices and education can help minimize these impacts.