This simple image is a long (one second) exposure from the side of a ship. These are swells from hurricane Oscar that was over a thousand miles away.
The captain took us south to avoid the worst of it, but for about two days we saw some impressive swells, more massive than these. Even the largest cruise ship in the world will rock in these conditions. The swells hitting the side of the boat sounded exactly like waves crashing on the shore. It was relaxing, and for two nights we slept with the balcony door open so we could hear the soothing sounds.
To make a one-second exposure in daylight, I set the aperture to f40. That's a tiny aperture, maybe the smallest I've ever used. An F-stop higher than 20 does not have a lot of practical uses, but long exposures are one. One second is long enough to make an in-camera motion blur effect without resorting to photoshop tricks.
Maybe this is a dull image without a central subject. It's more texture or pattern than a photo. Even so, it reminds me of the gentle sounds the waves made all through the night.