diving mask

Greetings Everyone, Is it better to do Free Diving with a Scuba Diving mask? Or is it better to scuba dive with a free diving mask? Which makes more sense with a single mask? (There are those who recommend each option because as far as I can see. There are those who say to scuba dive with a...

Hi all! We are a group of university students from from Hong Kong. As part of our research project, we are working on a smart diving mask that have a transparent display. Therefore, we are conducting this survey to gain a better insight of the scuba divers' issues. This questionnaire would take...