Yorla experience!!!! Scuba - diving

When you are a beginner, you need to take a course in a pool, if you want to have a short experience in the sea. When I took this course, I felt very exciting and happy.  But, When I saw the sea, and my teacher started to push us to inside the sea.  I was very nervous.  This kind of feelings it is normal, but you need to take control by yourself, because you can consume a lot of oxygen when you are nervous and you need this oxygen, if you want to go scuba-diving for many hours.  Afortunaly, I could be relaxed and I enjoyed my experience.
I was practicing for 3 hours, I remembered my classmate, he was from Spain,  because He was less hours than me because his blood presure started to elevate and he prefered to go to the boat.  When you practise this kind of sports, you need to be with other person. They recomend it.  I would like to repeat this experience, why not, I will take a formal course and I will have PADI licence.