Deep Dive Dubai is the deepest swimming pool in the world, and this is the session built for people who have never dived before. After a briefing and some practice in shallow water, you descend to around 12 metres - 40 feet - with an instructor beside you throughout. What makes it unlike any other first dive is what is down there: a sunken city, built to be explored, with streets, apartments, an arcade and a submerged pool table, lit from above through 14 million litres of perfectly clear, temperature-controlled water. There is no current, no weather and no visibility problem, which is exactly why it is such a forgiving place to breathe underwater for the first time. All diving equipment is provided. Friends who are not diving can watch the whole thing through the large viewing windows.