The reason everyone looks so calm is --- they're trying to make it last! Seriously, it's a rather short swim and there is so much to see under there that you try to not swim across too fast. In fact, they instruct you to not even kick your legs, but use only your arms to swim across. You are buoyed by the vest they give you. They also tell you you must keep moving, but you do find yourself trying to swim as s l o w l y as possible. It is great fun. My favorite thing at TL. I saw lots and lots of 8 years olds doing it with no problem.
melanie