Even if the stories about dolphins that saved people's lives dates back to ancient times, biologists have not yet scientific evidence that altruistic behavior.
It is possible that these marine mammals are just curious when you come near a man in danger. Or maybe they really want to help him.
But the story told by Maddalena Bearzi, president of Ocean Conservation Society, seems to contradict this hypothesis.
Maddalena wrote in his book "Dolphin Confidential: Confessions of a Field Biologist" about an incident that was witnessed at a time when studying the behavior of dolphins, along with her team.
Suddenly, Maddalena says, while eating, one of the dolphins stopped and went in another direction. Soon, others followed him.
Amazed by this behavior, researchers followed them out of the boat and saw that the dolphins were stopped at a distance of 5 km, forming a circle around a black dot.
When they arrived at the scene they saw a young girl on the brink of drowning. Researchers were able to save in the last minute and took her to the hospital where the girl recovered.
Later, they learned that it had been a suicide attempt, the young having on her a note stating reasons.
If it had not been observed for dolphins and if these mammals had not come near her, thus alerting researchers girl would have drowned for sure. But it was observed dolphins from a distance of five kilometers, or they were alerted to turn the other creatures of the sea by signals that we humans can not perceive. The fact is that something caused them to suddenly cut all meals and go in the same direction, reaching finally to where the girl was in danger.
The incident occurred in waters off Los Angeles.
Researchers wonders such as dolphins reacted in their absence if he failed to save the girl alone.
There are other incidents in which witnesses spoke of altruism dolphins. Recently, the 12 divers who were lost in the Red Sea for 13 hours were helped by these mammals, which have kept the sharks away.
There are also stories about how dolphins have helped swimmers to reach the shore or guided whales were in danger of running aground.
Recently, however, an incident occurred which could be considered a reciprocal above the set.
A tourist enjoys what appeared to be a calm day at the beach in Arraial do Cabo in Brazil when he saw something quite unusual in the water. He immediately took his room and saw a large group of dolphins, which number around 30 were heading straight for shore!
No one can say with certainty why dolphins have done what they did, but I am sure we are all so glad that it ended well.
Images shown are rare. Most times, when dolphins or whales go ashore, there is no one to rescue them.
Experts have not yet agreed on the cause of this strange behavior.
The most credible theory is that marine mammals are confused by the sounds produced by submarines and military ships when they use echolocation.
As these dolphins and soul destroyed people need a friend or a loving heart to understand, to help them and give them a new direction, a new hope, and desperation to leave their souls.
Environmental activists have argued for years that sonar - detection systems and submarine communication - used by ships on beaches causes wreck cetaceans because it interferes with their orientation and communication system. A recent international study confirmed that this technology is responsible for such a major incident - a failure of more than 100 dolphins in Madagascar.
In 2008, more than 100 specimens of dolphins Electra (Peponocephala electra) were stranded on a beach in Madagascar, and a recent study says that disorientation produced by high-frequency sounds used for mapping the seabed would have been the origin of this event.
Sounds of high-frequency sonar used by military vessels, transport, and research to communicate effectively prevents animals between them and affect their orientation can make cetaceans swim toward areas that otherwise would not adventure.
Volunteers from the Wildlife Conservation Society (WCS) and International Fund for Animal Welfare (IFAW) rescued some of the animals but for many others, it was too late to be saved.
It is the only way that man-made underwater noise affects marine cetaceans: Another study, conducted by Cascadia Research Collective soon by states that sonar can lead to death warships blue whales. These sonars emit sounds with frequencies between 1 and 10 kHz, which induce behavioral changes in whales. Among other things, changing feeding behavior of some whale species, which makes them "miss" very nutritious prey, the whales became malnourished and weakened and may even die of starvation, which decimates populations.
The findings are worrisome because sonar systems are very widely used in the navy and research vessels, especially for precisely mapping the undersea relief.
Nature protection organizations hope that these scientific evidence of man-made underwater noise impacts on cetaceans leading to review how this technology is used to reduce the risk posed to marine cetaceans.
Peruvian Ecologists have found no less than 615 dolphin carcasses along a portion of 144 kilometers from the beach. At the first estimate, experts consider as the cause of death of cetaceans powerful acoustic tests carried out by oil companies in the coastal waters of Peru.
"If we managed to count 615 corpses only dolphins on the beach, we are sure that a much larger number of dolphins have died in the ocean, and their bodies have not got to the shore. It is possible that the number of cetaceans killed to have reached some thousand copies, "says Hardy Jones, BlueVoice.org environmentalist group leader after the estimated situation on the beach, along with a researcher from the group ORCA Peru.
BlueVoice.org organization claims that "Initial tests prove the acoustic impact caused by sonic blasts used in the underwater exploration of oil deposits."
An expert from the ORCA Peru, veterinarian Carlos Yaipen Llanos, said that although no evidence has absolutely undeniable, he beliefs led to the propagation of acoustic tests of a "sonic explosions", a shock wave that caused internal bleeding dolphins, loss of balance and dizziness.
foto credit: google.com
HAVE A NICE DAY !!!!
