Sitting out on the beach by the Diamond Hotel in Fort Myers Beach watching the stars. All of a sudden, my partner and I saw a triangle shaped object floating across the sky to our right (north) passing from east to west. The object was completely silent, very large (significantly larger than a plane), without any lights. It was not possible to make out the object, we were only able to make it out because it was disrupting the night sky around it. We were able to track its movement for about 30 seconds before we lost track because it moved past the moonlight.