This is a small boulder down in the Waterworld area that is normally in the water or right at the water line. The side that faces the water is scooped out a bit like a wave (hence the name).
This boulder is mainly for kids or really short folks. My daughter was looking for another boulder to put a route up on and we found this one. It's a good boulder for kids as it's only about 10ft tall. There are several variations you can climb starting from the right (back to the water) and moving to the scooped face on the left. My daughter said the far right is easiest and then it gets harder as you go to the left.
You might wonder why bother with a boulder so small but it's actually a great one for kids and if your only 4ft tall then it's probably a decently serious climb. My daughter has been climbing since she was 4 and so we always look for new places for kids to climb.
If you're walking along the shore into the Waterworld area walk past all the large overhung boulders and you'll come to the obvious small boulder by itself with the wave shaped scoop.
You need a climbing pad for sure since there are lots of rocks at the bottom of the boulder. Plus, kids should always wear a helmet.
Sumner on top.
Climbing the harder side.