One of my favorite books is Animorphs#7 The Stranger. It's about five kids who have the power to morph. In other
             words they can change into any animal they touch. By touch I mean they absorb a strand of the animal's DNA. Then,
             from the DNA, they are able to create an exact copy of the animal and take on the copy. They can change into any animal
             they touch. There is a series of these books. In this book they find an entrance to a Yeerk pool, a necessity of their alien
             enemies, the Yeerks. Once inside they creep around, as roaches, to see if they can pick up any information about the
             location of the Yeerks' Kandrona, a portable version of the Yeerks' home sun, which is also a necessity, so they can
             destroy it. However they don't count on being a Taxxon delicacy. The Taxxons are allies of the Yeerks. Just as the
             Animorphs, Jake, Rachel, Marco, Cassie, and their alien friend Ax, are about to be devoured, time itself stops, except for
             the Animorphs. Then they meet an Ellimist, a creature who is woven into time and space itself, who stopped time to ask
             the Animorphs to decide the fate of the human race. They can either go to another planet and leave Earth to the Yeerks or
             they can stay and fight. When the decision to stay is made the Ellimist puts them back on the Taxxon's tongue. Somehow,
             they manage to get out of the Yeerk pool in one piece.
             A couple days later, they meet in the woods around Cassie's house and are having conversation about reconsidering the
             Ellimist's offer. Suddenly they are zapped into a possible future. There they walk and look around freely, since everyone is
             a Controller, a creature controlled by a Yeerk. See Yeerks are parasites. They infest a creature's brain and take over its
             body. The creature is still there, but it can do nothing. Back to the story. While the Animorphs are walking around they
             come upon a HUGE Yeerk pool. It was more like a lake. You could have ridden a boat around...