She just wants to find that treasure. Your kids find out how partners can help run a race. The finish line is the safety of the reef. Place the clock for all to see. You must get to the reef to hide.
Kids hop on one leg down the racecourse.
Yell the time for Start, and have them time themselves to the finish. For Round 2, pair kids of similar heights and abilities. Help them tie ankles together - left ankle of one to right ankle of other. They cannot communicate, but they must not drag the other. Let pairs time themselves down the course.