Researchers made few tests toanalise them: the first test involved two dophins observed in a laboratory, the task was to select some objects which were placed in a closed box,among these there were a bowl, a cross and aflower pot.
As a result of their adaptation to the underwater world, they could distinguish them , so this raised the hipotesis that they had a sixth sense.
It’s clear that they have an ability that fewmammals have, by emitting high frequency sounds and analising the echoes, they create a mental picture and see with sound.
Then the scientists went to the Bahamas and discovered the dolphinsbecome invisible under the sand and direct the sound into a directional beam, but according to the speaker this is not a sign of intelligence.
They went back into the wild and made another test to verifyif they could categorize and recognize similarity between objects, the result was positive and not only did they recognize the objects but it was stuff that they had never seen before.
This is aclear sign of intelligence.
What about similarity with animals? Dolphins can imitate our movements and have no difficulty in relating body parts of human beings.
Back to captivity a mother and herbaby dolphin were taken as an example, the mother uses a practical approach to teach to feed, the baby learns by imitating the mother.
Through mimic these mammals pass on the information and learnby copying each other, they use clicks to keep in touch and communicate by body postures.
Another problem raised the question about the creativity of the dolphins, so scientists made another...