Jon Fishman

In a pine tree behind me, an eagle waits out the rain, hunched into himself, brooding. Crows squabble, a murder chasing a raven. Seals cruise the lines of fishing nets bobbing in the water, hoping for an easy meal, the tender bellies of salmon.

By irreducibly complex I mean a single system composed of several well-matched, interacting parts that contribute to the basic function, wherein the removal of any one of the parts causes the system to effectively cease functioning.