One pool at the Flamingo has a 14-foot waterfall. The hotel also contains another, more sedate pool for those who want to relax. (Gary Friedman / LAT)
The MGM Grand, Las Vegas’ largest hotel, goes the extra mile with a lazy river that takes almost 10 minutes to float around. (Gary Friedman / LAT)
Duchess, a bottlenose dolphin, and her newborn calf swim at the Mirage Dolphin Habitat in Las Vegas. (Darrin Bush / AP)