Mystery Orcas Spotted in Puget Sound

Researchers tracking a previously undocumented pod of killer whales in the Salish Sea

Mar. 12, 2026 at 10:35pm

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Marine life researchers are closely monitoring a mysterious pod of orcas that have been spotted moving through the Salish Sea in recent weeks. The trio of whales, identified as T420, T419, and T421, were first photographed in Alaska in 2025 and are believed to have traveled from the Gulf of Alaska, Aleutian Islands, or Bering Sea region. Scientists are studying why these mammal-eating killer whales have ventured into the Puget Sound area, as they have never been documented in these waters before.

Why it matters

The appearance of these unfamiliar orcas in the Salish Sea is an unusual occurrence that has piqued the interest of marine researchers. Understanding the origins and behaviors of this pod could provide valuable insights into the overall health and migration patterns of killer whale populations in the Pacific Northwest.

The details

The trio of orcas were first spotted in British Columbia before moving into the Puget Sound region. Researchers have identified distinctive "cookie cutter shark marks" on the whales, suggesting they may have traveled from the Gulf of Alaska, Aleutian Islands, or Bering Sea area. Scientists believe the whales are mammal-eating killer whales, which is unusual for the Salish Sea. The whales have most recently been spotted as far south as Tacoma.

  • The whales were first photographed in Anchorage, Alaska in March 2025.
  • The whales were first spotted in Vancouver Harbor earlier this month before traveling south into Puget Sound.

The players

SR3

A local nonprofit dedicated to marine wildlife research and rehabilitation that has been closely monitoring the movements of the mysterious orca pod.

Orca Behavior Institute

A research organization that has been documenting the whales' movements through the Salish Sea.

Orca Conservancy

A conservation group that has reported on the recent sightings of the orcas in the Puget Sound region.

T420, T419, and T421

The three previously undocumented killer whales that have been spotted in the Salish Sea.

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What’s next

Scientists say they will continue to closely monitor the movements and behaviors of the mysterious orca pod as they study the reasons behind their unexpected appearance in the Salish Sea.

The takeaway

The arrival of these unfamiliar killer whales in the Puget Sound region highlights the ongoing need for marine researchers to study and understand the complex migration patterns and population dynamics of orcas along the Pacific Northwest coast.