#在水體/水表移動
# Move in/on Liquids
使特定難以達到及被限制的水下區域易於偵測 (Making certain underwater areas are constricted and hard-to-reach to inspection easier.)
尾巴和尾部的鰭通常很大且呈新月型，以增加每個擺力的力量
(The tail or caudal fin is usually large and crescent shaped to increase the power of each sweeping motion.)
