So, when they discover that the Chee-including their friend, Erek - are in trouble, they have no choice but to help.
But the Chee's problem is much deeper than anything the kids could have imagined.
It's hidden in the ocean.
So far down that no human has ever traveled there - and survived.
And the Animorphs realize what will happen if Visser Three discovers the valuable secrest of the Chee.
One of which is the Animorph..
Author-K A Applegate
Category-Fiction
Series-Animorphs
Age Group-Preschool
Publisher-Scholastic Inc
Binding-Paperback