Henry says you can’t write poems about whales.
It’s too obscure a metaphor, the biology of behemoths
Is too exact. Too much science going on.

I like whales. The smooth dorsal curves of their fat bodies
Arching and twisting towards the depths,
The salt spray of their powerful breath,
And their positively massive hearts;
They understand that they are great
Yet there is something still more awesome than they.
There’s more mystery and poetry to biology than people would like.
Especially realists. Life isn’t straightforward and they hate it.
We have some very basic, very general patterns that we follow,
But they’re far too broad to say ‘always’ ever.
Every rule, every law, has been or will be broken.
And the world will keep on turning (until the day it doesn’t),
And the whales will keep on swimming (until the day they don’t).

Henry says you can’t write poetry about whales.
I don’t like Henry very much. I think he’s wrong.