Thank you, Evelyn, Child of Earth, the entity replied. As far as what to call me...I do not know. I have no need of such a thing until now. We on this world can sense each other, and we communicate by pictures, feelings, and impressions. You both are only hearing me communicate in words, because spoken language constructed of morphemes is the way of both your peoples. But you, Doctor, Child of Gallifrey, have also been speaking with your mind for a long time.

The Doctor nodded. You are correct, he admitted, before glancing up in thought for a moment. Returning his gaze to the water, he finally projected: May we call you Water Spirit?

Water Spirit...curious. The entity seemed to puzzle for a moment silently after it spoke. I am not the only spirit in water on this world. And this is not the only water. If you like, I am the Great Forest Water Spirit, I suppose. For you are standing near the largest forest on our world.