ZEBALLOS, B.C.- A killer whale calf stranded in a lagoon without its mother to guide it to the open ocean off northern Vancouver Island appears traumatized as a rescue team tries to coax it to move toward a possible reunion with its extended family, a marine scientist says. Jared Towers said Tuesday the rescue team only has about 30 minutes daily when the tide rises to the point where the two-year-old orca calf can safely navigate itself out of the lagoon, near the village of Zeballos, located more than 450 kilometres northwest of Victoria. The calf’s mother, a 15-year-old Bigg’s killer whale, died Saturday when she became beached at the lagoon and could not free herself despite rescue efforts of local First Nations residents and others. Towers said they’ve tried…