Unlike most modern surfboards, all boards were finless, requiring surfers to drags their hands or feet to turn.

与大多数现代冲浪板不同，所有的冲浪板都是无鳍的，冲浪者需要拖着手或脚才能转动。

The finless porpoise, known as the " giant panda of the water, " is a barometer of the ecological environment in the Yangtze River basin.

江豚被誉为“水中大熊猫”，是长江流域生态环境的晴雨表。