Answer:
When it comes in, From sea to shore, Twenty paces you'll see, No less, no more.
What is full of holes, but can still hold a lot of water?
There is a creature of God whose body is hard; it does not wish to eat unless you strike its head.
Two little holes in the side of a hill. Just as you come to the cherry-red mill.
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?
If it’s information you seek, come and see me. If it’s pairs of letters you need, I have consecutively three. What am I?