If the flipper had a smooth leading edge, the whale would be unable to make such tight rising turns because the water would churn and eddy behind the flipper and cease to create lift.
हे पंख अधिक सुरक्षित असतील आणि त्यांचे परीक्षण व दुरुस्ती करणे जास्त सोपे जाईल.