Kayaking in Hawaii

Recently our family went to a sand bar in Kaneohe Bay about a half hour from our home. It was a beautiful sunny day with trade winds blowing.
The children were so excited as we boarded the double hull boat with an outboard motor.
I had heard about the sand bar, but it was my first time actually going there. When the tide is low, you can see the sand, but when the tide is high, it disappears.