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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Aerial locomotion in marine animals ： ウィキペディア英語版 Aerial locomotion in marine animals Various marine animals are capable of aerial locomotion, i.e., jumping out of the water and moving through air. The possible reasons of this behavior are hunting, escaping from predator and saving energy for swimming or breathing. Some of the jumping behaviors initiate gliding and taxiing in air, while some of them end up falling back to water. ==Penetrating water surface== The speed of motion in air is faster than in water because of drag force. The drag force is proportional to density of the fluid. The animal jumping out of water will feel almost no drag, since the air density is 1,000 times less than water density. Usually animals gain thrust for the jumping as how they lift themselves underwater. Some of them are group behavior. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Aerial locomotion in marine animals」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.