Why say dolphins are intelligent species?

October 1987 War Iran - Iraq is going very tough. At that moment in dolphin, dolphin called in a long snout was a U.S. Navy unit drop in the Strait of Ormuz to participate in a campaign to remove landmines. Large dolphin (Tursiops trucatus) are dolphins found a lot of mines. Thus in dolphins have been trained to do the task mines that Iran had dropped to interfere with the operation of oil tankers in the Gulf Persique.


This is not the first time dolphins were used for military purposes during the Vietnam War, "dolphin marine" was used then. But the task of them are "top secret" so one can not know exactly what that mission is.
In contrast, one thing is sure that everyone knows is the intelligence of the children of this marine mammals. Like bats, they are endowed with an organ located in the sound waves, the dolphins will emit sound when hit an obstacle that the sound will get back, this time our memory " painted "onto the map to record what they found around there, and also let them know the situation of motion of the object.
To find the gap: As case finding and drop mines in the Strait of Ormuz - it is thought that dolphins were used to a signal receiver located at the base of the brain and it will record the waves sound waves travel and compare responses.
But dolphins can trigger other types of sound: the sounds they use to inform each other know. According to experts, the vocabulary of dolphins about 400 different signal generated.
Dolphin is a very intelligent animals that they can imitate and understand human movements. People know the characteristics and abilities of dolphins were trained to use dolphins to different purposes such as military purposes, as the circus train dolphins