Navy expands sonar testing despite troubling signs

Navy officials say it’s vital to national security that sailors receive sonar training in real-life conditions. The Navy estimates that its activities could inadvertently kill 186 whales and dolphins off the East Coast and 155 off Hawaii and Southern California, mostly from explosives. “There are the ocean equivalent of deserts where sonar exercises could be conducted which would be vastly safer,” said Lindy Weilgart, a biologist at Dalhousie University in Canada who doesn’t receive any Navy funding. [email protected]   08:54