龙骨，小鳍和盔甲帮助引导水流流过身体表面，他们用这种方式来降低水的阻力（看图示）。
The keels, finlets, and corselet help direct the flow of water over the body surface in such as way as to reduce resistance (see the figure).
鲨鳍小翼看起来非常锋利！
每片鳍状木结构都有一系列小的挤压处，水平堆叠时，在木棚外立面创建了一个森林模式。
Each fin has a series of small extrusions that, when stacked horizontally, creates the forest pattern that defines the shed exterior.
一种生活在大西洋深海里的红蓝色鲈亚目食生鱼（瓦片鱼） ，颈背有一个肉质的垂下物，身体上部和鳍上有黄色的小斑点。
A reddish-blue percoid marine food fish (Lopholatilus chamaeleonticeps) of deep Atlantic waters, having a fleshy flap on the nape and small yellow spots on the upper sides and fins.
这片 小 鳍可以减少乱流，藉此改善通过前轮附近的气流。
This fin reduces turbulence and hence improves the airflow passing close to the front wheels.
这片 小 鳍可以减少乱流，藉此改善通过前轮附近的气流。
This fin reduces turbulence and hence improves the airflow passing close to the front wheels.
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