It doesn't need to breathe, but the suit does help keep the parts together.

Diver Skaab

Exploit (When this creature enters the battlefield, you may sacrifice a creature.)
When Diver Skaab exploits a creature, target creature's owner puts it on the top or bottom of their library.

Exploit (When this creature enters, you may sacrifice a creature.)
When this creature exploits a creature, target creature's owner puts it on their choice of the top or bottom of their library.