The Atlantis Marine and Waterpark is the latest of Dubai's attractions. The Dolphin Bay, Aquaventure(slides and rides), the Lost Chambers (65,000 marine animals in aquariums) and the Atlantis Dive Center are its main attractions.
Wild Wadi used to be the most popular water park until Atlantis burst on the scene. It is still more reasonable though. The Jumeirah Sceirah at 33 meters is the tallest and fastest free fall slide outside North America. Wipeout FlowRiders allows you to try body boarding, knee boarding or surfing.
Wonderland is a family fun park with multiple rides. The space shot which goes from 0 to 130km/hr in 2.5 seconds, the terminator which weaves in every possible direction and water rides at Splashland are what you can look forward to.
The Al Nasr Leisureland has rides for little kids and sporting facilities that include an ice rink, tennis courts, squash courts, swimming pools, boxing rings and bowling alleys.