Ok, let's hear it from the divers here because I went snorkelling in a diving pool last night and found it weird that I could happily and comfortably go down to 5 metres without having to equalize but I have been swimming in that very same pool before and it sure hurt like hell when I went down to the bottom with just a diving mask and fins. I did it about 5 - 6 times and didn't feel the need to equalize at all. Didn't hurt, didn't feel uncomfortable. My hearing's fine and I'm not sick. Should I be worried?