Visitors at the Ballard Locks in Seattle witnessed a rare marine encounter on Monday afternoon. A group of Bigg's killer whales entered the waters of Salmon Bay shortly after 5 p.m., drawing crowds to the spillway dam and fish ladder. The appearance of these predators in such a confined, freshwater-adjacent space marks an unusual event for the area.
Kersti Muul, a field biologist and director of Salish Wildlife Watch, tracked the pod throughout the day as they moved past Whidbey Island and Edmonds before arriving at the locks. While sightings in the broader Shilshole Bay happen periodically, experts noted this specific proximity to the spillway dam is a first in recent memory. Photographs confirmed a group of up to five orcas participated in the visit.
These animals are distinct from the resident orcas often associated with the Salish Sea. Bigg's killer whales typically hunt pinnipeds along the coast rather than focusing on salmon in the inner waterways. The increase in frequency for these transient visitors suggests they are tracking recovering seal populations in the region. Observers noted that the orcas circled the area briefly before departing, likely mapping out feeding grounds for future return visits.