The movement of the pond water is meaningful to their conversion because he is talking about how the water never ending. He was talking about that the Tucks where never going to die just like the pond water. He was also talking about how the Tucks stopped the cycle because they drank from the water. Winnie was shocked when she heard this but then he said that the water in the pond would then get to the ocean. This is how the pond water is meaningful to their conversion.