I went out to my balcony to get some air and was looking out west. I saw two blue pulsating orbs move up about 300 feet hover then descend down. I observed them doing this for about 10 minutes. They did this about three times in the course of 10 minutes. It looked close to the Redondo beach pier. As they went up and hovered they also changed direction and go north just a bit then went up higher then descended. They were a bright blue. I have photos from my iPhone. And a video. The pics are clearer.