Marcos Mecías-Calvo is graduated in Physical Activity and Sport Sciences and PhD in Social Sciences (Sport Sciences). The aims of his PhD were to analyze the performance and effectiveness of professional lifeguards (rescue + CPR for 5 minutes) with and without rescue equipment (MARPA and fins).

His experience in drowning began after completing the professional lifesaving course (2001) and continued as a lifesaving instructor and emergency coordinator for beaches in Galicia. Actually is Associate Professor at the Atlantic European University in Santander (Spain), in the subjects of aquatic lifeguard and first aid, and first aid instructor of the Spanish Society of Intensive Medicine, Critics and Coronary Units (SEMICYUC). He is also a member of the scientific committee of several congresses of lifesaving and emergencies.

His areas of interest in research are focused on lifesaving, drowning prevention, cardiopulmonary resuscitation quality and the teaching of basic life support protocols at school, as member of the IAFD Research Group (Integral of Physical Activity and Sport). These activities are held in collaboration with the research groups REMOSS (University of Vigo, Spain) and GIAAS (University of A Coruña), to combat together against drowning.