A lively coral reef teems with a multitude of Sergeant Major fish swimming in harmony as the camera glides over bottom

great barrier reef sergeant major abudefduf lively multitude coral reef variety fish reef australia sea ocean biodiversity surface coral clear vibrant bustling teeming colorful underwater many marine life tropical ecosystem thriving scuba lot of diving wildlife nature environment habitat conservation serene beauty paradise pristine world blue various tranquil calm exploration harmony breathtaking aquatic untouched