If the virtual water is too deep, the movement of the panthers is restricted, but that of their primary prey, the white-tailed deer, is restricted even more.
(the virtual water; is; too deep) (the movement of the panthers; is restricted; ) (that of their primary prey; is restricted; even more)
the virtual water the movement of the panthers that of their primary prey
is is restricted is restricted
too deep
even more