Narwhal (Monodon monoceros) is the name of one of the pope most humans is unknown. The name "Narwhal" is derived from the Old Norse language yg means "corpse whale". The name was given for his habit reply to swim sometimes motionless on the sea surface with the position of the stomach is facing up & color spotted her reply-gray spots like drowning sailors. They are known to live only in the Arctic waters, precisely on the Arctic Ocean. Narwhal are toothed whales & including man-eating carnivorous marine animals such as fish, shrimp, or squid
Narwhal Horn mysterious spiral turned out to function as sensors to help find a giant water quality and to "smell" other Narwhal.
Horn Narwhal whale can reach a length of 2.4 meters that has long puzzled scholars of nature and hunting. Any explanation of their functions often lead to debate, so says Dr. Martin Nweeia, a researcher at the Harvard School of Dental Medicine.
According to Nweeia, the horn seems to have a hydrodynamic sensing capabilities. He expresses this in the prsentasi Biology Conference on Marine Mammals in San Diego.
Narwhal (Monodon monoceros) is a type of whale, including very rare. Body length reaches 4 to 4.5 meters, and most are found in ocean waters around the Canadian Arctic, but sometimes also seen far to the east to Russia.
The team found that Nweeia Narwhal horns similar to the membrane with a very sensitive surface. There are approximately 10 million nerves that are connected to the surface of the horn, in order to detect changes in temperature, pressure, and water salinity.
"There is nothing comparable with it in nature and no one is more unique than Narwhal horn in the shape, appearance, and function.
Each whale Narwhal (Monodon monoceros) also use sound to communicate with each other as well as dolphins or other whales. In fact, each may have a unique sound that also shows identity.
Scientists have long known that marine mammals use sound signals to communicate with each other in the water. Recent research even shows that whales have dialects.
However, not many recent studies as the voice identity diguankan Narwhal whale. The researchers believe Narwhal whales use sound to identify each other and distinguish one individual to another individual.
These scientists concluded after studying three tails Narwhal voice in Admiralty Bay on Baffin Island, Canada. They use electronic recorders attached to the body of the giant mammals.
"For the first time, we really can follow the animals whenever they speak and wherever they move," said Ari Shapiro of the Woods Hole Oceanographic Institution.
Although one recorder missing, the remaining two have shown that different forms of sound, the sound of whistles and pulses. Shapiro shows that both types of voice signal is not used to exchange information about food sources, but merely indicate the identity of individuals in social communication.
What the Narwhal whale similar to the nose dolphins are also bottle whistling noises to communicate. Although the data on the communication between the Narwhal whales still minimal, the scientists believe it has a very sensitive hearing like any other whale.
They routinely to migrate thousands of miles and in groups. So in a voice different, each one can distinguish the individual in the group or other groups. The results of this study published in the Journal of Acoustical Society of America September 2006 edition.
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