Answer:
what lines are you asking about. I don't see no lines anywhere
One theme is the importance of the preservation of the species. In The Jungle Book by Rudyard Kipling, the wolves do not harm the child because they know that harming a human can bring other humans upon them, endangering them.
Explanation:
I believe the correct answer is to help the reader visualize a view where water and sky are difficult to tell apart.
The author is trying to portray an image where the water and the sky are somehow blending into each other - you can't tell where one ends and the other one begins, because both items are colored similarly - various shades of blue.