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A diver must rise to the surface of the water slowly because of the changing pressures and if they simply rose straight to the top from deep down their brain and body wouldn't be able to cope with trying to equalise the pressure and they would either die or end up with severe problems. It is a way of trying to get your body to equalise the pressure and realise the pressure is lessening. When you go under water, you are putting the amount of pressure of water and the pressure from the land on top of you, that is a lot of pressure to get your body used to. One of the issues was the Benz; which would have them driven mad by the suddenness of the changing pressures.
Deep-sea divers wear special suits to protect themselves from the extreme pressure and cold temperatures of deep ocean waters. These suits are designed to provide insulation, maintain body temperature, and prevent the diver from getting crushed by the immense pressure at depth. The suits also contain breathing apparatus to supply the diver with the necessary gases to breathe underwater.
Things like pressure and temperature can harm deep sea divers.
The pressure is GREATLY increased while going deeper under water.
The temperature is also a lot colder so the suit regulates temperature.
An Oxygen tank is also used... obviously this is the breath.
Because the wet suits keep their body from succumbing to freezing temperatures of the deep ocean.
At high pressures Helium is still non-toxic to our bodies and the molecules are small enough at one atmosphere of pressure (14.7 psi) to not get trapped within our bodies the way Nitrogen does. When in very deep water whatever we breathe gets compressed tightly and is pushed through our lungs' walls into our bloodstream. At one atmosphere of pressure the Nitrogen in the air we breathe is too large to pass into our bloodstream and so is harmless. Every gas other than Helium is toxic at high pressure. While deep diving even Oxygen is toxic in normal percentages.
Improved Answer
The above is not correct. ALL gasses can contribute to decompression sickness (even oxygen in high enough doses - which does not happen in recreational or technical diving). Nitrogen does go into (and out of) the bloodstream even at one atmosphere. Because helium is a smaller gas, it will move into the divers tissues faster than nitrogen and cause a gas buildup faster than nitrogen - which can put a diver into a required decompression stop situation faster than air.
But the original question is why is helium and oxygen used as a breathing mixture. Oxygen is obviously used since it is needed to "fuel" our bodies. It is added since the oxygen content of a breathing mixture would not have enough oxygen in it after helium is added since the helium would dilute the oxygen to an undesirable level. Helium is used since it has very low (almost non-existent) narcotic properties. The nitrogen in air is highly narcotic at depth and adding helium allows one to dive without the effects of narcosis (where one's mind is impaired).
We need to look at a couple of things to understand this question and its answer, so let's dive in. When divers go deep, they breathe air that is under pressure. The deeper a diver goes, the higher the pressure of the air he is breathing. With water pressure all around him, high pressure air is needed to keep his lungs from collapsing.
This air, particularly the nitrogen in it, becomes dissolved in the blood. If a diver suddenly came up from a deep dive, the rapid reduction in pressure would result in the gas in his blood coming out of solution and forming bubbles in his circulatory system. This can be extremely painful and even fatal.
Divers know "the bends" as this rapid decompression a diver experiences when he surfaces too rapidly. It's like taking the cap off a bottle of carbonated beverage. Rapid decompression allows carbon dioxide in the soda to come out of solution and form bubbles. This can happen when to divers who ignore warnings or miscalculate decompression times.
So that there wouldn't be more pressure in the body than outside their body.
Water is generally colder than body temperature so divers need special suits to keep warm to be able to stay down longer.
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Which has more pressure fresh water or salt water?
Salt water has higher pressure than freshwater at the same depth, as the density of salt water is higher due to the dissolved minerals. This increased pressure can be advantageous for activities like deep sea diving, where divers need to adjust their equipment accordingly.
What is the name of the special light that comes from the warm ground?
The special light that comes from the warm ground is called "earthshine." It occurs when sunlight is reflected off the Earth's surface and illuminates the nighttime side of the moon.
Should you have light screen or reflect on sigilyph?
It depends on the role you want Sigilyph to play on your team. Light Screen boosts Special Defense for your team, while Reflect boosts Defense. Consider your team composition and whether you need more Defense or Special Defense support.
What happens to the pressure you dive down deeper in the water?
As you dive deeper into the water, the pressure increases because of the weight of the water above you pressing down. For every 33 feet (10 meters) you descend, the pressure increases by one atmosphere. This increase in pressure can compress the air spaces in your body, such as your ears and lungs, which is why scuba divers need to equalize as they descend to avoid discomfort or injury.
When you want to iron something on a shirt what special paper do you need to do it?
You will need iron-on transfer paper specifically designed for use with fabric. This paper allows you to transfer images or designs onto fabric using heat from an iron. Make sure to follow the manufacturer's instructions for best results.
Why do deep sea divers need to wear special suits?
Thermal protection - water at depth can be very cold.
Why do sea divers and astronauts need to wear special suits?
Both astronauts and sea divers wear special sits because they travel into atmospheres that are strange to our bodies. Our bodies were not built to stand extremely deep waters and outer space. The suits protect them as they go about their business in those places.
What gear do you need to deepsea dive?
You you either need a bathysphere or "scuba" equipment.
How do you get a deepsea tooth in Pokemon ruby?
First you need to go through the abandoned ship and get a scanner from a scientist in there Note: need dive, then give the scanner to captain stern and he will allow you to choose either a deepsea scale or deepsea tooth obviously you want the tooth. Finally have a clamperl hold the deepsea tooth then trade it to a friend then take it back and it will be huntail, if you chose the scale you will get gorebyss instead of huntail.
Why does diver need a special breathing equipment but fish does not?
Because fish have gills,giving them the ability to breath under water and divers dont.
Before a diver dives will he will take a deep breath or hyperventilate?
Free divers do but scuba divers do not need to. Scuba divers take their air with them and would have no need to hyperventilate.
How do you get deepsea tooth?
You get it from Captain Stern in Slateport City after finding the Scanner in the Abandoned Ship but you need a Pokemon with Dive.
Why do people use air?
We need air to breath. Otherwise we would suffocate and die. That is why scuba divers have special equipment to allow them to have air to breath underwater.
Do the astronauts need special clothes while living and working inside the space station?
Yes, astronauts wear specialized clothing while living and working inside the space station. They wear comfortable clothes for daily activities and special space suits for spacewalks or emergencies. These suits provide protection from extreme temperatures, radiation, and microgravity conditions.
Why do divers use a knife?
they need protection from stuff
What do divers wear in the Olympics?
What they wear depends on what events they are competing in. Most athletes wear modern athletic attire that can include warm up suits, shorts and tanks.
What types of skills do divers need?
They need to know how to swim away from sharks and such!
