article about Animals

[صاصائیل]

Dolphins'Abilities
At a center for marine studies in mississippi,
a dolphin called Kelly causes a lot of excitement
among scientists.All the dolphins at the center help
to clean their pools.[khanderiz]
They can learn to pick up any trash that falls into the pool and trade it for a fish when they see a trainer.


(the ending of part one)

[صاصائیل]

...but Kelly has a celever strategy.
When she sees a piece of paper in the water,she hides it under a rock at the bottom of the pool .
Then ,when she sees a trainer , she tears off a small piece of paper and trades it for a fish.[nishkhand]
Then she tears off another piece ,and gets reward again...
the ending of part 2