Loved the title, and whilst the image you paint is definitely nothing new, the story carries enough depth, and your word choice is interesting and fitting. I feel you wrote yourself into this poem, as it gets stronger with each stanza. A sad and (unfortunately) too true poem.
Well done Ben, I agree with the others, that your rhyming metaphors were expertly placed. Indeed, a sad tale, the industrial acid smog and rain, which is destroying many a beloved woodland, even the mighty whale has become frail.
Added to my favorites.