you don't, you can dive naked if you'd like.... but you can also go snow skiing in the nude as well... it's all a matter of comfort. wetsuits help you retain heat and water removes heat 25x faster than air, so you DO get chilly faster in water... a great simple description is located here:
Scuba Divers wear wetsuits for the purpose of staying warm and protection. Wetsuits are named wetsuits because they get you wet. Water goes into the wetsuit and gets trapped. This trapped water is then heated up by your body by the escaping heat. This in turn keeps you warm. Also you know how when washing dishes your hands get soft. Well that happens to your body so rubbing against anything down there will for the most part cut you. The suits keep you protected.
They insulate against the cold water around you.
You don't always need a wetsuit, it is just in winter or cold countries you would wear one. It is too cold even unbearable without one so that's why you would need a wetsuit!
they need protection in water from dangerous animals also there is a problem in breathing so they carry gas cylinder.
warmth and protection
A "scuba suit" typically refers to a type of exposure suit worn by scuba divers. There are two main types of scuba suits: wetsuits and drysuits. These suits serve different purposes and are used in specific diving conditions: Wetsuits: Usage: Wetsuits are commonly used by scuba divers, snorkelers, surfers, and other water sports enthusiasts. Purpose: Wetsuits are designed to provide thermal insulation in cold water. The suit traps a thin layer of water between the neoprene material and the skin. The body heat warms this water, creating a thermal barrier that helps to keep the diver or water sports enthusiast warm. Diving Conditions: Wetsuits are suitable for diving in relatively warmer waters, typically ranging from around 10 to 25 degrees Celsius (50 to 77 degrees Fahrenheit). Drysuits: Usage: Drysuits are primarily used by scuba divers, particularly in colder water conditions. Purpose: Unlike wetsuits, drysuits are designed to keep the diver dry by preventing water from entering the suit. They are sealed at the wrists and neck, and divers wear insulating undergarments beneath the drysuit to stay warm. Drysuits are more effective in colder water conditions where prolonged exposure to cold water could lead to hypothermia. Diving Conditions: Drysuits are commonly used in colder waters, often below 10 degrees Celsius (50 degrees Fahrenheit). In summary, scuba divers use scuba suits (either wetsuits or drysuits) to provide thermal protection and insulation during underwater activities. The choice between a wetsuit and a drysuit depends on the water temperature and the specific needs of the diver. Additionally, other water enthusiasts, such as surfers and snorkelers, may also use wetsuits for thermal protection in different water conditions.
There isn't a specific collective noun that is universally recognized for a group of scuba divers, but some suggestions that have been used informally include: A "school" of scuba divers A "team" of scuba divers A "group" of scuba divers A "buddy" of scuba divers These terms are not as commonly used or established as collective nouns for some other groups of animals, but they can be used informally in conversation or writing to refer to a group of individuals who are scuba diving together. Ultimately, you can choose whichever term you feel best suits the context.
scuba divers
Free divers do but scuba divers do not need to. Scuba divers take their air with them and would have no need to hyperventilate.
They swim
seebees
In the Water....
scuba divers
Marine biologists conduct extensive research on the organisms that live in various bodies of water. These scientists often wear scuba gear, wetsuits, protective gloves, and safety glasses for their occupation.
Scuba - self contained underwater breathing apparatus
Scuba Bob's Ocean Quest - 2006 Fearless Divers Scuba Rangers 2-7 was released on: USA: 2007
Skin divers are people who dive into the ocean without using special equipment, unlike Scuba divers.