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Environmentalists are so far stumped as to what could be the cause, Perú 21 reports. One theory is that powerful waves caused by oil exploration ships could have resulted in internal damage for the mammals.
"It is a horrifying thought that these dolphins would die in agony over a prolonged period if they were impacted by sonic blast," an statement obtained by MSNBC.
U.S. has paused similar acoustic testing for fear that it was having a fatal impact on the dolphin population.
In addition to the dolphins, MSNBC reported thousands of anchovies have also been found dead on Peruvian beaches.
Originally posted by dayve
Guess they're not as smart as we thought they where...
Originally posted by dayve
Guess they're not as smart as we thought they where...
At the Organization for the Conservation of Aquatic Animals (ORCA), Peru's leading marine mammal protective organization, scientists say that deep water sonar is the culprit in the mass deaths. Researchers have noticed that none of the dolphins bore marks of trauma on their bodies or showed any signs of poisoning. Instead, they found damage to the dolphins' middle ear bones, a sign of decompression syndrome, which produces a violent and painful death, according to Dr. Carlos Yaipen of ORCA. "An acoustic boom...disorients the animal and produces hemmorhages which cause the animal to end up dying on the beach."
Deep water sonar is employed in the shipping industry and by oil companies in search of undersea petroleum, and the sonar bursts cause damage to animals whose communication frequencies fall in the same range.
Carlos Yaipen of the Organization for Conservation of Aquatic Animals (ORCA) says he believes use of “marine bubble” technology in offshore oil exploration is responsible. “The oil companies use different frequencies of acoustic waves and the effects produced by these bubbles are not plainly visible, but they generate effects later in the animals,” he told Peru21 newspaper. “That can cause death by acoustic impact, not only in dolphins, but also in marine seals and whales.”