Professional skills aren't necessarily the key requirement; being able to deal with being locked up in a steel pipe for long periods and damage control knowledge are the biggest.
Essentially the main requirement is mental - you can't be claustrophobic, be physically healthy, and be able to react swiftly and knowingly if an accident or catastrophic failure occurs.
study submarine procedures and sleep
The submarine is manned by the crew, and crew members are called submariners.
A submarine is kept at, or close to, surface air pressure.
Actually the submarine will not kill any one, but the rockets and torpedo launched from the submarine kill the people.
People who study marine biology are called marine biologists.
Marine-biologists.
This is an opinionated question...
The Sea people
Submariners.
People did not discover about it, scientists did. They did it in 1985.
most people want to discover life
Marine biologists get to explore the ocean with many different animals and discover and learn more about the their enviroment. Such as plants and other living organisms around them. Marine biologists also have the oppurtunity to teach their studies for many people in museums, magazines, and even their own personal classes.