The dead whale on the beach - a sad sight that makes trying to understand the cause of death as a massive and beautiful animal.And if it's not one whale but two, five, ten?
why whales are beaching?
mass emissions of whales on shore is one of the most tragic and intriguing mysteries of nature over which to this day many scientists scratching their heads.The sad spectacle of corpses of huge animals in an unusual situation for them is a sense of bewilderment and pity.What makes the main inhabitants of the ocean expanses to end life on the sandy shore and die under the scorching rays of the sun?Why whales jumped ashore?
For example, in February 2015 on the coast of New Zealand emissions of about 200 dolphins.According to scientists, this mass phenomenon was not observed for more than 10 years.Despite the best efforts of rescuers managed to survive only a few hundred individuals.The others died under its own weight and due to the lack of water.Although most of the emissions occur in the group of whales, mostly among deep-sea species.
sound pollution of the ocean
boundless expanse of water filled with a variety of sounds, most of which is of natural origin.Increasingly, measured life ocean violate human produced noise (from the engine submarines, mining, military testing and finfish).As a result, under the influence of sonar dolphins and whales lose their hearing by almost 40%.
What does hearing loss (fine tools, the ability to discern the slightest fluctuations in water) for the animal whose life depends on the ability to hear?Underwater sound traps disorient the animals in the water room, knocking them from the usual way, so the whales and dolphins, lost in space, swim in shallow water.
Too rapid ascent to the surface contributes to the inherent divers decompression sickness, in which due to a sharp decline in the pressure build up of nitrogen bubbles in the blood and damage internal organs and blood vessels.This assumption is confirmed by scientists find signs of a disease at autopsy of the dead animals.On nitrogen bubbles contained in the blood of whales for scientific assumptions may affect directly loud noises from the engines and submarine explosions.Under the influence of sound waves bubbles rapidly increasing and contracting, can clog the blood vessels, tissue damage, injure the nervous system.
reason for the mass death of whales - military exercises?
strong explosion, in addition to clogging of blood vessels, can cause rupture of the animals.This phenomenon (torn lung and bleeding of internal organs), scientists have observed in the survey strandings during or after military exercises of whales and dolphins.For example, in 1989 during naval exercises near the Canary Islands on the coast of China jumped 24.Why whales jumped ashore?Most likely, the cause of underwater noise became unbearable, literally stunned aquatic life.Harm submarines caused by marine life, carefully studied all Americans, because in this country the military complex is exposed to the strongest public pressure.
Throwing whales on shore happened to the man-made manifestations of human evolution and the appearance of submarines.What's in those days could determine this feature of the inhabitants of the oceans?In 1950, on the shore of the island of Stronsay emissions 64 whales after 5 years here killed 66 dolphins.What causes the animals to choose a way to die?Why whales jumped ashore?
Failure magnetic fields?
According to the theory of Margaret Klinovsky annually whales migrate to the warm waters for mating and calving, after which marine animals are returned.The route is largely dependent on magnetic fields, which are a kind of landmarks.In areas of maximum oscillations of these fields whales may lose their orientation and swim in shallow water.It has been observed that the mass suicides of whales mostly occur immediately after the flares on the sun, distorting the magnetic lines.
According to one version, the whales beaching due to changes in climatic conditions.Ocean currents bring cold water from the Antarctic, forcing the whales to swim in shallow water with a view to keep warm.In Australia, the emission was recorded over 80 whales are literally dotted with the bodies of his five-kilometer coastal zone.Managed to save only 25 individuals.Why whales jumped ashore?What was the cause of mass suicide?Maybe, disorientation, which can disrupt weather patterns?In stormy weather with gusty strong wind may storm tide, or the so-called surge of water.The animal swam too close to land, and can stay there, out of alignment in a timely manner when the water recedes.
Self-number - one more assumption mass ejection whales on shore.Version occurs to exist, although whale population in nature is not so great as to require it to cut.
cause of death of whales - pollution of the oceans?
The reason mass ejection whales on shore can be considered pollution of the oceans, gradually turning into a dump catastrophic proportions.Particular accumulation of debris, a fifth of whom are industrial emissions and oil waste falls on the coast of Hawaii.Fit Garbage Patch is located in the Pacific Ocean, is comparable with the US mainland.Naturally, such a huge dump, the mass of which exceeds 100 million tons, a negative impact on cetaceans.Although these animals are not a fish, and unlike them breathe air instead of dissolved oxygen in water pollution, damage from such landfills, they may be due to an injury and getting into the oil slicks.
Perhaps socio-psychological factor?
Psychic hypothesis is also put forward as one of the causes of mass ejection whales on shore.Whales and dolphins are social animals that are prone to the influence of the leader.If the latter is lost in space orientation and outputs the pack in shallow water, the animals, despite the danger of death, still continue to follow him.
holds the existence of the infectious theory of suicide cetaceans, now special attention to scientists around the world.Some viruses infecting mammals, adversely affect your hearing animals, causing diseases such as meningitis and encephalitis, causing failure of echolocation system.Lost in space orientation kit (photos can be seen in the article) starts to choke, so beaching themselves in order to facilitate breathing.Return to their native element will only exacerbate the situation.Previously it was thought that the whales can not be targeted by the virus.In fact, they can be carriers of marine seals - the food of killer whales.
accidentally hit the shore, the animal can give signals of distress to his fellow, who immediately rush to the rescue of the poor man, and fall into the same trap as calling for help.
