Atlantis is a resort with its own water park.
My favorite of which was Current.
It's basically a lazy river with occasional rapids and waves.
This is the wave area.
There is even a part where a conveyor belt takes you up a long ramp. This tends to be where the ride gets most congested.
Another part of the ride give you the option of going to the Power Tower where the scarier slides are.
Keep you butt up on these slides because they'll burn your bum.