It is Poem.
I say this because the title is Proper Noun.
Answer: It tells readers there is something important happening on that asteroid.
In my opinion, it is logos. I think that the sentence is LOGICAL.
Answer: The sea was like a rippling blanket of brochure-blue. Squabbling seagulls flew overhead, harassing the beachgoers in their endless hunger. Gannets were dive-bombing the stretched surface of the sea far out from shore. The horizon was edged with a silver tint and a cormorant was flying into that place where sun and water meet. His wings were a blur of motion and he soon faded from sight. The opera of the sea washed over me and the wave-music was welcome.
