CNN  —  When researcher Jared Towers set up his cameras underwater to observe a pair of killer whales , he saw something strange. One of the orcas , a juvenile female, “approached a camera I had in the water to film her younger brother and then opened her mouth and let out a dead seabird,” Towers, the executive director of Bay Cetology, a Canadian team of marine biologists based in Alert Bay, British Columbia, told CNN. She closed her mouth, paused, apparently watching for Towers’ reaction and