Narwhal (monodon monoceros) is the name of one of the whales who are not known to most humans. The name “narwhal” is derived from the Old Norse language which means “corpse whale”. The name was given because of his habit who sometimes swam motionless on the sea surface with the position of the stomach is facing up & body color who spotted-gray spots like sailors who drowned. They are known to live only in waters around the North Pole, exactly in the Arctic Ocean. Narwhal is a toothed whale & including carnivores who eat marine animals such as fish, shrimp or squid
Narwhal’s mysterious spiral horn was functioning as a giant sensor to help determine quality of water and to “smell” other narwhal.
Horn narwhal whales which can reach 2.4 meters in length it has long been a puzzle nature experts and hunters. Explanation of function was often subject to dispute, so said Dr.. Martin Nweeia, a researcher at the Harvard School of Dental Medicine.
According Nweeia, the horn seems to have a hydrodynamic sensing capabilities. He expresses this in prsentasi at the Conference on Marine Mammal Biology in San Diego.
Narwhal (monodon monoceros) is a type of whale, including very rare. Body length reaches 4 to 4.5 meters, and mostly found in the waters around Canada’s Arctic seas, but sometimes also seen further east to Russia.
Nweeia team discovered that the narwhal horn is similar to the membrane with a very sensitive surface. There are about 10 million nerves that connect to the surface of the horns, in order to detect changes in temperature, pressure, and water salinity.
“There is nothing comparable with it in nature and nothing is more unique than the narwhal horn in terms of 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 of which may have a unique sound that also shows his identity.
Scientists have long known that marine mammals use sound signals to communicate with each other in the water. Recent research even suggests that the whales have dialects.
However, not much research to learn the identity of the voice as that diguankan narwhal whales. The researchers believe the narwhal whales use sound to identify each other and distinguish one individual to another individual.
It is the scientists concluded after studying the sounds of three tails narwhal in Admiralty Bay on Baffin Island, Canada. They use electronic recorders attached to the body of the giant mammals.
“For the first time, we can actually follow the animals whenever they speak and wherever they move,” said Ari Shapiro of the Woods Hole Oceanographic Institution.
Although one of the recorder is missing, the remaining two have shown a different form of sound, a whistling sound and throbbing. Shapiro suggests that both types of noise is not a signal that is used to exchange information about food sources, but merely indicate the identity of individuals in social communication.
What does the narwhal whale is similar to the bottle nose dolphins which also issued a whistling sound to communicate. Although the data concerning the communication between the narwhal whale is still minimal, the scientists believe it has very sensitive hearing as well as other whales.
They routinely migrate thousands of miles and in groups. So with different voices, each able to distinguish individuals within the group or other group. The results of this study published in the Journal of the Acoustical Society of America September 2006 edition.