For thousands of years, people have wanted to dive deep under the water, either for fun or for a special purpose. Over two thousand years ago, during the time of Alexander the Great, people were already inventing ways to help them breathe underwater. By 1538, Greek divers were able to sink all the way to the bottom of the ocean and come back to the surface without getting wet. However, the diving bells that they had were heavy and difficult to use. People could spend only a fairly short time under the water, and they found it hard to move around.

That all changed in 1949. A diver named Jacques-Yves Cousteau and an engineer named Emile Gagnan designed a device called the Aqua-Lung. It had two hoses attached to a tank of air and allowed divers to breathe for long periods of time underwater. Later, this kind of equipment for breathing underwater became known as scuba gear. This equipment has made it possible for people to work as deep sea divers, working under the water.

The most famous deep sea diver was Jacques Cousteau. Besides inventing the Aqua-Lung, Cousteau worked as a deep sea diver for the military during the Second World War. After the war, he became a scientist. He explored the bottom of the world’s seas and oceans to find out about the fish and other animals living there and to record the information for the future. Throughout his life, he tried to help people understand the oceans better and to try to protect the animals living in them.

Scientific research is a big part of what many deep sea divers do. Other divers work for the military, taking care of equipment or cleaning the bottoms of boats. Still other divers do similar kinds of work in cleaning and maintenance, but for commercial businesses such as shipping companies. Almost any job that involves going under the water can be part of a deep sea diver’s work.

How can you have a career as a deep sea diver? Training requirements depend on the specific job that the diver has to do. A scientific researcher, for example, normally has to study in areas like biology or oceanography. However, basic requirements for work as a deep sea diver are a high school diploma and diving training. The diver’s safety can depend on this type of training, and it is normally very thorough.

The work that deep sea divers do is very important. Salaries can vary, depending on where people work and what they do.  Generally, however, they make over $50,000, and they might even make more. Diving can be very tiring work, and it is also difficult or even impossible in bad weather. Because of these factors, divers generally work underwater for less than half of the year. They might spend the rest of the year writing or teaching about what they discovered underwater or getting themselves in shape for the next round of dives. Does this sound like a good job for you?