DOLPHINS

The dolphin was the very smart sea mammal, moreover the natural system that equipped his body was very complex. One of the examples was dolphin skin that could reduce the friction with water, so as the dolphin could swim with few obstacles to water. The dolphin had a system that was used to communicate and received stimulating that was named the sonar system, this system could avoid available objects in front of the dolphin, so as was avoided from the collision. This technology was afterwards applied in the production of the submarine radar. The dolphin was the mammal. They lived in sea and the river all over the world. The dolphin was relatives of the pope and cleaned. There were more than 40 dolphin kinds. A dolphin could not be sound asleep under water. He could sink. The dolphin was classified as the smart mammal. The dolphin could help humankind, when the dolphin has been trained, in fact the fire circle could be then broken through by them.