The sea measures time by its motion. Not the ticking of a clock, but the surge and withdrawal of the surf, in a vast and ceaseless rhythm.
This is the sea beneath the ancient fort of Dun Aengus on the Aran Island of Inishmore. We lay on our bellies and looked down, mesmerized.
This is the Tasman sea, along the Kapiti Coast of New Zealand. Kapiti Island, about three miles off shore, is now a bird sanctuary. When the seas are rough, as they often are, the island is unapproachable.