Aldrea, a young member of the outpost the Andalite race has placed on the planet of the Hork-Bajir, must help her native friend Dak when the ruthless, parasitic Yeerks try to enslave his people.

Morphing into killer whales, the Animorphs discover a whole new world where humans with gills exist in the deep waters below.

Visser Four has found the Time Matrix, the machine Elfangor had hidden, and he plans to use it to become Visser One.

Finding an ally in the android Erek King, the Animorphs come to appreciate his nonviolent nature and seek to collect the vital information he has before they lose their fight against the evil Yeerks.

The wildly popular books by K.A. Applegate are available in audio!

When Tobias and his friends were given the power to morph, they were also given an important warning: Never stay in a morph for more than two hours. But Tobias broke the time limit, and now he's trapped in the body of a hawk — forever.When he discovers an important Yeerk secret, Tobias knows he has to do everything in his power to destroy it. But to do so, he'll have

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Marco's mom is back. But she's not Visser One anymore. Marco's not even sure if she's still a Controller, but he's determined tofind out. No matter what it takes. No matter what might happen. Marco wants his mom back.Jake and the other Animorphs realize that Marco is under some serious stress. And that the situation with his mom could very welljeopardize everything they've worked for. Now they also have to wonder if Marco will be the one to give away...

Rachel is falling apart. Literally. Her newest morph has the ability to regenerate it's limbs, but when Rachel demorphs there's a lot more Rachel than when she started out. One more Rachel, to be exact. Rachel is an okay person to have around. But two could be considered overkill. Especially two Rachels with completely opposite personalities: one is pathetically weak; one is super strong and super nasty.

Now the Animorphs have to figure

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Two of the free Hork-Bajir living on Earth have brought the Animorphs and Ax a terrifying discovery: Visser Three has tried—-unsuccessfully—-to create a race of amphibious Hork-Bajir.

It seems Visser Three has become fixated on the sunken Pemalite ship he glimpsed and lost (book #27). So, he has arranged the construction of a fabulous new underwater Yeerk craft he calls "SeaBlade," that will be able to locate the Pemalite

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We can't tell you who we are. Or where we live. It's too risky, and we've got to be careful. Really careful. So we don't trust anyone. Because if they find us...well, we just won't let them find us. The thing you should know is that everyone is in really big trouble. Yeah. Even you.________________________________________________________________The Andalites have returned! The main fleet flew off-course in an effort to stop the galaxy's newest threat...

Jake has to attend a wedding out of town. No one has been designated to take over as leader of the Animorphs. But when Tobias tells the others that he's found the place where Visser Three currently feeds, there is a unanimous agreement on going after him. The kids aquire cheetah morphs to run the visser down. Unfortunately, there's a new player on the scene: an inspector sent by the Council of Thirteen to check on Visser Three's eternal problems....