North Myrtle Beach Lights Over Ocean

We have a condo in N. Myrtle on the beach. We often sit on our balcony at night. My wife and I have seen strange very bright lights over the ocean on several nights. Just 2 night ago we saw a very bright light. This was over the ocean but not nearly high enough to be a star but not low enough to be a boat. First just a bright light that went on and then off very quickly. Then, amazingly, a row of about 3 or 4 lights on and off in succession. These were very bright and only lasted about 4 seconds. Last year it was several “dancing” lights randomly over the ocean that went on for an hour or so. We will keep watching!