Environmental interpretation seeks to reveal meanings to provoke personal connections between the public and the protected heritage. In the specific case of geological heritage, it determines and com-municates the meaning of a geological and geomorphological phenomenon, event or location. There is a range of nature tourism activities that can promote interpretation of this heritage. The practice of properly organized scuba diving can bring benefits both to conservation of the environment and to local communities. Fernando de Noronha is one of the best dive sites in Brazil and actions focused on as-pects of marine geology add even more value to the activity. In this sense, we sought to investigate the opinion of divers about environmental interpretation and aspects of marine geology in the archipelago by applying a questionnaire. The questionnaire was applied online between April 2018 and May 2019, with 100 individuals who had practiced scuba diving in the archipelago at least once. Different data collection techniques were applied (convenience, purposive sampling, quota and snowball). The main results in-dicate that information on marine geology is relevant for the scuba diving activity, and this type of action can contribute to a more conscious attitude towards island sustainability.
