A free diver captured the moment when two bubble rings collided, dissolving into each other to form one larger circle. https://t.co/azUBDNOBw9 https://video.twimg.com/ext_tw_video/1808978069312393216/pu/vid/avc1/1280x720/_oZJGbmF9HzxNF-s.mp4?tag=12