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Scientific Hypothesis Experiement Sonar testing has detrimental effects on marine life Surveillance Towed Array Sensor System SURTASS Low Frequency Active LFA sonar is the US Navys newest must-have defense technology The Navy claims that LFA sonar will be able to detect todays quieter submarines so reliably that it plans to deploy LFA routinely throughout most of the worlds oceans However LFA sonar may harm whales and other marine mammals This sonar will generate one of the loudest sounds that human beings can make in the ocean Worse because they are low-frequency in nature these sounds can travel for hundreds of miles effectively ensonifying thousands of cubic miles of ocean LFA may damage or destroy marine mammal hearing as well as disrupt calving breeding feeding and communication A sound wave can cause material that resonates in its frequency to vibrate shatter shear or tear Some air spaces in mammals and fish may react to LFA sonar in this manner All of this is too high a price to pay for questionable security against the latest breed of submarines It is hardly nessecary to perform anymore experiements to prove the idea that sonar waves have adverse affects on marine life due to the high number of beached mammals on our shores In March 2000 a mass stranding of beaked whales minke whales and one dolphin occurred off the Bahamas after a Navy exercise in which mid-frequency active sonars were used While beaked whale mass strandings have occurred in the past this was the first time that a qualified scientist was on hand to collect the appropriate samples from fresh carcasses to determine cause of death The most recent results of the on-going investigation into this incident indicate that these whales died from the impacts of a loud sound acting on their air spaces The sonar is equivalent in decibels to us standing next to a rocket being launched It causes brain hemorrhaging and disorientation to cetaceans
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