Though I hardly ever write any poems there, I have a rather beautiful office at St Andrew's University in a building that looks right over the sea and out over a medieval castle; sometimes the sea is quite stormy, so it's a good window to look out of. All I've ever got from this is 6 lines, which are two little haiku back to back, or maybe front to front.
Fast in the tides’ flow
Each day rough boulders, rounding,
Wear away oceans.
Oceans wear away
Boulders each rough day, rounding,
In the tides’ fast flow.
from Full Volume (Cape, 2008) ? Robert Crawford 2008, used by permission of the author and the publisher