Who is She

As treacherous as she may be
Great beauty lies within 
As she glows all night and day 
Her danger grows in every way 
So be aware and be cautious 
The world is half her own fortress 

She brings life into our world 
But be aware, don't be decieved
By the beauty which you can see 
She will take life as she will please
Her danger lurks in every way

She is full of darkness 
Yet so full of light
She is changing all the time
So what is it that I see
Why it's the sea 
As you can see