The lake's water was very clear, providing good views of the seaweed and algae growing on its bottom. From time to time we could see sea cucumbers. Old Qu pulled one out of the water that was easily a half meter in length.
天鵝湖水質清澈，湖底的水草、藻類清晰可見，時而順勢一撈，足有半呎長的大海參。