Walking on the ocean floor is extremely more dangerous

Описание: Theses tourists are understandably curious about the underwater world. It holds mystery and intrigue, promising sights that most people will never be able to see. The fish are colourful and the animals here are beautiful beyond description. But the world beneath the waves is a domain that humans were never meant to enter. Humans need to breathe air to survive and they cannot do this underwater without special equipment. These helmets allow people to walk on the ocean floor. People are naturally buoyant, keeping them on the surface. Without weights, humans must work hard to swim down and remain on the bottom. The helmets provide the weight that keeps the people on the bottom and the air hose attached to each helmet delivers air so that the people can breathe. It seems that this should be all that the people need to know, but it is far more complicated when we enter the ocean and venture deeper than a few feet.
The atmospheric pressure on a person doubles at 5m (15 feet). The weight of the water above presses down on anything below it. Our lungs are compressed and we lack the muscular strength needed to inhale at this depth. To overcome this, the air is under pressure so that inhaling is possible. But the air inside our lungs is compressed at this depth. As long as we breathe in and out, everything works. The danger is in rising to the surface with lungs full of compressed air. The air expands and can burst a lung, causing an injury that is often fatal.
Scuba divers are highly trained to understand the risk of ascending to the surface improperly. If they need to make an emergency ascent, they do so while exhaling, so that their lungs will not be injured. In a panic, an inexperienced person will hold their breath.
If any of these walkers stumbles, they will tip over due to the extreme weight of the helmets. The helmet will go to the bottom and it will fill with water. The walker will not be able to see as the salt water meets their eyes and clouds their vision. They will not be able to see if help is coming. They will float up rapidly to the surface.
If a mistake is made on the surface and the wrong air supply is turned off, the same problem will occur as the helmet beneath fills with water.
The guides are wearing scuba gear and they could provide air to somebody in an emergency. But the guides are weighted down and not wearing fins so they cannot swim to a walker who needs help. They could not rise rapidly enough to intercept a tourist rocketing to the surface. They are too far away from most walkers and they are trying to manage too many people to provide help in an emergency. They would have only a few seconds to solve a problem in any scenario.
The walkers here are likely unaware of the risks associated with their underwater adventure. They are also not aware of the damage that their feet are doing to the coral and the small animals that dwell on the bottom. The path from shore is well worn from repeated tours that take 8-10 people over the reef at a time.
The only safe way to explore the ocean is to take a proper course that provides the skill and training needed to avoid accidents.

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