If you're thinking about mounting your GoPro on a headstrap above a regular dive mask, forget about it because it has been known to fall off when you jump off the boat. People have been filming their diving experience with the GoPro for quite some time now by mounting it to their scuba masks. One of the better ones that allow you to do this is the Octomask Frameless GoPro® Hero 3+Compatible Scuba Mask. Made with dual safety tempered lens and super-soft silicone that hugs your face, the Octomask Frameless fits just about anyone. It has a low profile, which keeps it close to your face, and very little to block the view for maximum visibility. Works with all GoPro models.