Weird European Guy

Ok, so to add to my list of the ¨crazy german lady¨ and ¨touchy teacher¨ I now have weird European guy. I go into the ocean, it´s a pretty big place and I´m just swimming/floating, minding my own business... This older european guy comes into the (massive) ocean and ends up swimming/floating within 2 ft of me. WTF! This is not some crowded beach, there are maybe 5 people in the water within shouting distance. I turn around and kick and I actually hit his foot. I decide it´s time to get out of the water. Of course, he also gets out of the water. WTF! I go lie down on my chair and he stands on the shore, just past where the water comes to. I´m thinking seriously? I´m on my stomach, with my eyes closed and I peak out every few seconds. He´s standing there like superman with his hands on his hips and feet about shoulder width apart. Every few seconds he turns a quarter turn. The guy is standing up sunning himself. On occasion, he will hold his arms out to the side with palms up then down. This went on for about 30minutes before he walked away. I still don´t know why he felt the need to swim so close to me.
Maybe I need to get out more, because some of these people just seem crazy to me.