Without a fin, a shark can no longer swim and slowly dies.

没有鱼鳍，鲨鱼便无法再游泳，并慢慢死去。

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Before being fitted with her artificial fin, which her handlers refer to as her "ninja suit," Allison the green sea turtle could only swim around in tight circles because she only had one flipper.

艾莉森的饲养员把她的鳍比作“忍者服”，由于在装上人工鳍之前她只有一只鳍，所以这只绿海龟只能在很有限的范围里游。

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Yet many fish can still swim even if most of the tail fin is a bitten or cut off.

然而，许多鱼类仍然可以游泳，即使大部分的尾鳍是一个咬伤或切断。

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