External auditory canal exostosis (ECAE), also known as surfer's ear, is an alteration of the bone tissue of the external ear, mainly caused due to overexposure to cold. Considering that those who practice water sports such as surfing and bodyboarding on the Pacific coast are exposed to waters with temperatures between 12-16 °C,. We seek to determine, in this study, the prevalence and degree of ECAE in surfers and bodyboarders from the coast of the south of Pacific Ocean, Reñaca and Concón, during the year 2018. An evaluation of the ECAE was carried out by means of video-otoscopy in 67 people (134 ears) who practiced surfing and bodyboarding from the beaches of Reñaca and Concón, and a questionnaire was used to collect information about their practice habits. As a result, a prevalence of ECAE of 77.6% was observed, with 61.2% bilateral ECAE and 16.4% unilateral ECAE. It was also possible to determine that 62.3% of the participants do not use protections. Based on these findings, it is possible to conclude that there is a high prevalence of ECAE in surfers and bodyboarders on the central Chilean coasts, which should alert both the practicing population and hearing health professionals to promote a healthy life in this population.