I did the night snorkel last June. The folks with me loved it. I, on the other hand, did not realize how difficult it would be to see underwater in the dark (without prescription lenses, which I needed). Taking into consideration the fact that I couldn't see well, it felt a little eerie out there in the dark. It was a neat experience, though, and I'm glad I did it, but next time I will get a better mask or wait until after I get that LASIK! There were a lot of creatures out that are not out during daylight.