Northwest researchers monitor gray whale that might have been sickened by its tracking tag Published 4 hours ago Share on Facebook Print article SEATTLE — A team of marine mammal biologists and veterinarians from the United States and Canada is treating and monitoring a gray whale that appears to have developed an infection several months after being darted with a satellite tracking tag. The whale is part of a group of about 250 gray whales that feed off the coasts of Oregon, Washington and British Columbia during the summer. The whale is now off the coast of Vancouver Island and appears robust and to be behaving normally.