海豹的鰭肢與人類的手臂同源。The seal's flipper is homologous with the human arm.我們可以看到魚把鰭露出水面.Fish could be sighted finning near the surface.鯨 、 海豹, 企鵝和海龜均有鰭形肢.Whales, seals, penguins, and turtles have flippers....

“鰭”的拼音為：qí...