Oil and gas companies looking for deposits offshore have touted their equipment as environmentally friendly. However, new research suggests that blue whales are having a hard time hearing each other over the seismic blasting that the search entails.
Research has discovered that whales forced to compete with the seismic testing work, which involves bouncing sound waves off the sea bed, markedly increase the number of times they repeat the same calls [The Times].
The study, published in
Biology Letters, was conducted in Canada's St. Lawrence Estuary, and is the first report of whales increasing their calls in response to underwater noise. Researchers believe that the whales are repeating the calls simply because other whales can't hear them, and they're having trouble gathering to feed and mate. Blue whales' numbers have dwindled to somewhere between 5,000 and 10,000, so any disruption in their social behaviors is not helpful for a population ...
