Yep, that is water splashing.

I once saw in Milwaukee WI 20 foot high or higher crashing waves from Lake Michigan going OVER the break wall barrier 50 feet inward in 50 mph windy, NASTY conditions, almost like a tsunami. We stayed back far enough in the parkng lot to get splashed badly sitting in the truck but didn't dare going on foot any closer since would have knocked us over and backwards very hard on foot for sure.
Don't mess with mother nature and some people have to learn the hard way not seeing tomorrow like the idiots going thru washed out flooded roads the river over the road being over the floorboards.
