We were on the beach at cape point in buxton,nc at approximately 2am. we saw the object approximately 20 feet from us at about 12feet in the air. it was about 3 feet in diameter. the object was in front of us and quickly darted away out of sight. it then appeared again and slowly came towards us and the darted away again. we started walking away from from that direction and it appeared again right behind us. we saw the object three times in the matter of about 5 minutes. it was lime green in color and round in nature.