Efforts to find a sick young orca from a critically endangered population of killer whales in the Pacific Northwest came up empty Thursday, and a scientist who tracks the animals declared her dead — ...

A Southern Resident orca who carried the corpse of her calf for at least 17 days in mourning has released it. Ken Balcomb, executive director of the Center for Whale Research, spotted orca J35 with ...

Researchers say an endangered killer whale that drew international attention as she carried her dead calf on her head for more than two weeks is finally back to feeding and frolicking with her pod.

Few people know the orcas of Puget Sound as well as Ken Balcomb. A researcher with the Center for Whale Research on Washington state's San Juan Island, Balcomb has been studying the whales for more ...

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