一隻海豚自動向人求助, 牠的智慧告訴牠, 人是萬物之靈.
果然潛水人把魚鉤剪去使牠恢復游泳能力.

http://www.youtube.com/embed/2gvgkHSyKFE

On a night-time dive near Hawaii , 2 divers were found  a bottlenose
 
dolphin and it started to swim around them over and over again. On looking closer, one of them discovered the reason for this strange
behavior - the dolphin had a fishing line hooked around it, hindering its ability to swim. 
 
They cut him free, and the dolphin swam away. The fact that a dolphin
would come to humans for help maybe evidence of its' intelligence, as
most injured animals would never come close to a human.