ZEBALLOS, B.C.- A rescue team working to coax a stranded killer whale calf from a lagoon off northern Vancouver Island is prepared to change tactics to save its life, including the possibility of lifting the orca out to the open ocean, says a Fisheries Department marine mammal co-ordinator. Paul Cottrell said Wednesday that all contingencies will be considered over the coming days after efforts by a team of experts and First Nations members failed to get the two-year-old to leave the lagoon. He said they won’t rule out placing the orca in a sling-type device and hoisting it to the open ocean. “We are thinking beyond if we have to change tactics, depending on the calf’s health going forward,” said Cottrell at a news conference with Ehattesaht First Nation Chief…