Her eyes might gaze toward
distant
stars,
but not for her the lure of Mars.
She’s challenged by a different place,
just as unknown as outer space.
Not for her the stratosphere
but a life-filled, liquid atmosphere—
where she can be… a pioneer!
Down,
down,
down
in
the depths of the sea
where
no human
had gone before.
Down,
down
down
to
the deepest deep—
exploring
the ocean floor

how does the poems physical form help develop its theme?