Tide Pools & the Edge of Things

There is a particular kind of magic in the intertidal zone — that narrow band of coastline that is neither fully sea nor fully land. Twice a day it floods and drains, and everything living there has to be a specialist in change.

I spent a morning crouched over a single pool, notebook getting steadily damper, watching a beadlet anemone close and open as the water shifted. It struck me that ecology is mostly the study of edges: where one thing becomes another, where conditions get hard enough to be interesting.

As a recovering perfectionist, I find the rocky shore oddly comforting. Nothing here is tidy. Survival isn't about being optimal — it's about being good enough, often enough, in a world that keeps moving the goalposts.

I came home with sandy boots and a head full of questions about how networks of species hold together when the environment refuses to stay still. That, really, is the whole expedition.