The time of our sighting was between 7:30 and 8pm.We had just walked out of Sloppy Joes on Tresure Iskand Florida with our food order.We were parked across the street at Walgreens.As we stood by our vehicle my girlfriend noticed a pulsating green light over the beach above the restaurant.I estimte the height of the object in question to have been two thousand feet.Maybe the size of a small car.I tried to determine a shape and it looked either oblong or triangular.We stood and watched for a few minutes.I tried a video but stopped because my phone camera really wasn't adequate.shortly afterward whatever is was got a brighter green a accelerated to the right over the beach at an unbelievable speed and left a long bright green trail behind it that appeared as a snapping rubber band as it left.I'm 75.This is a first for me.