Seismic blasting used in oil exploration can reach 250 decibels and be heard for miles. It can cause hearing loss, disorientation and disturb essential marine mammal behaviors such as feeding and breeding. Just over 300 Cook Inlet beluga whales are left after four more washed up dead in Cook Inlet in the past two weeks.
Water is much denser than air, so its molecules are packed tighter together. This means that sound (which relies on molecules vibrating and pushing against one another) propagates muchfurther and faster under water than in air.
A new study has identified some of acoustic sanctuaries off the coast of British Columbia in the hope that they may be protected. Researchers emphasize that these opportunity sites can be protected with little change to current shipping patterns, which… Read More ›