Among English poems, I rather like this one by Laurie Lee:

    A golden fish like a pint of wine
    Rolls the sea undergreen,
    Glassily balanced on the tide
    Only the skin between.

    Fish and water lean together,
    Separate and one,
    Till a fatal flash of the instant sun
    Lazily corkscrews down.

    Did fish and water drink each other?
    The reed leans there alone;
    As we, who once drank each other's breath,
    Have emptied the air, and gone.

    ...I and the public know
    What all schoolchildren learn,
    Those to whom evil is done
    Do evil in return.