Aircraft livery Airlines' 1975 livery was among the first Eurowhite schemes outside Europe. The Braniff 1967 livery (see Overal Colour above) was also often dubbed "Jellybean." Jellybean liveries involve multiple alternative colourways in which entire aircraft or parts of them are decorated. A Jellybean variant involved decorating tail fins in different designs, as exemplified by Air India Express, displaying different Indian culture and heritage on its tail, Alaska Air's brand refresh livery, Frontier Airlines with the images of different animals and birds on its tail, JetBlue Airways, Mexicana, Pakistan International Airlines' "ethnic tails," and PLUNA. British Airways’ 1997 ethnic liveries were celebrated
Fish fin sets water or air in motion and pushes the fin in the opposite direction. Aquatic animals get significant thrust by moving fins back and forth in water. Often the tail fin is used, but some aquatic animals generate thrust from pectoral fins. Cavitation occurs when negative pressure causes bubbles (cavities) to form in a liquid, which then promptly and violently collapse. It can cause significant damage and wear. Cavitation damage can occur to the tail fins of powerful swimming marine animals, such as dolphins and tuna. Cavitation is more likely to occur near the surface of the ocean, where the