Is other to navigate temperament and ability

Take the stone head fish of large numbers of death in Maryland, the United States as an example, it mainly distributes in the northeast of the United States.This kind of fish is similar to the crab, has the migratory characteristic-fish fry breeds in the deep nautical mile and is after breeding the river mouth coast looks for food, growth, return to deep sea discount sunglasses again till the end of summer and early autumn.This in winter beginning night, therefore, the stone head fish isn,t lured by food and warm environment that the river mouth enriches but slowly do wish to go home, wait until air temperature to suddenly decline, when the sever winter comes all of a sudden they then and too late returned to, large numbers of death.
As for the terrestrial magnetism field ambulation that makes people worried rather says-namely being partial to of the Earth magnetic field is moving may influence the navigation system of birds, fish etc. animal with change to it is large numbers of death, also lack on science basis.Didn,t discover that the terrestrial magnetism field has already shown a Zhao change currently.Introduce according to Wang Tian Hou, the parts of birds really have the skill of Ci definite direction, but the terrestrial magnetism field isn,t birds to uniquely navigate a basis.Birds, still owning the training and memory, geography geography discretion, heavenly body to navigate etc. is other to navigate temperament and ability.