US Navy releases data on fin whale , shark attacks off Hawaii , USA . It says it is trying to mitigate the losses . ` Marine mammals use hearing the same way we use sight '' to find food , he said . Environmental group says more needs to be done . Military training exercises are expected to increase .
US Navy releases data on fin whale , shark attacks off Hawaii , USA . It says it is trying to mitigate the losses . Environmental group says more needs to be done . Military training exercises are expected to increase .