The specialty course ESA Hover Diver has been conceived to improve the techniques of control of the buoyancy during dives with the respect of the limits of the recreational underwater activity. Through the study and the practical experience, under guidance of Instructor ESA, the participant learns the theoretical information and the techniques that will allow improving of the techniques of control of the order (buoyancy) in water, with the maximum respect of the safety and with the correct awareness. The course foresees the study of the manual of Specialty ESA Hover Diver, the elaboration of the information from the instructor and the Dives in Open Water. The purposes of the course propose to prepare the people to develop dives within the limits of the achieved certification, in places that mirror the conditions met during the training phase, together with a patented scuba diver trained to the practice of the recreational underwater activity within the limits of non decompression. Instructors ESA can model the program, with the respect of the pre-arranged norms, according to the expectations of the scuba diver, conducting the course so that to satisfy all necessities. The course is well delineated, so that to guarantee that every participant receives a brevet that attests the included phases equal for everybody with precise. The philosophy of the course intends to improve the awareness of the scuba divers towards the environment.