The children learn about water quality, what can be a problem, and what may not be a problem. They witness the care of fish eggs by the mother fish and the emergence of baby fish. They learn the value of keeping the environment natural. They run tests of their own to see how long it takes for very small bits of dust and soil to settle out of the water. They learn about the need for patience. The children come to understand the nature of rainstorms and drainage. They come to understand how nature can heal itself by natural processes.