Talk:Sandworm/@comment-29241395-20160724074256/@comment-10429980-20160724135927

If her body can create magical lighting then it should be able to allow access to oxygen.

For a more scientific answer, all she would need would be enough tiny apertures in the shell of the outer body to allow for resperation for those inside the shell.

Or she could use the large mouth of the shell to gulp and expel air at regular intervals.