Don't mind at all.
It was a few years back now .. I don't remember exactly how many. My wife and I were down on the beach, not doing anything much. We both started to get the feeling we were being watched. The light was good, so we could see the beach was deserted, for as far as we could see in either direction. No one to be seen on the cliffs behind us either.
The feeling didn't go away, and the strength of it seemed to build. It wasn't hostile, but I'd say .. wary, or suspicious maybe. I felt it was coming from a spot about 25 - 30 meters off shore, where I could see the waves breaking.
After about 5 - 10 minutes of this feeling building and building we both decided to leave. We walked back up onto the path leading up from the beach, got maybe 30 or 40 meters along it, and it was like a switch was flicked. The feeling was just gone. Pressure, pressure, pressure, boom, nothing.
We looked at each other, confirmed we'd both felt it up til that point, and felt it go in the time it would take to click your fingers.
Never experienced it before or since, and I've been down to the beach again since then.