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Health Monitoring

A skin condition visible on a southern resident killer whale calf.

July 28, 2023

Increasing skin disease in endangered orcas concerns scientists

J32 a pregnant Southern Resident killer whale breaching.

March 20, 2023

Endangered orca calves exposed to contaminants even before birth

2 Orcas swimming beneath the surface.

November 21, 2022

Prey shortage indicated by changes to orcas’ body condition

A Southern Resident killer whale surfaces in choppy water in the Strait of Juan de Fuca.

June 15, 2022

Hormone levels indicate stress levels of endangered orcas

A group of Southern Resident killer whales swimming with a calf.

March 25, 2022

Prey Scarcity Increases Pollutant Levels, and Their Effects, in Southern Resident Killer Whales

A Southern Resident killer whale calf with its head above the surface.

December 27, 2021

Why are so Few Babies Born in the Southern Resident Killer Whale Community?

A Southern Resident killer whale carrying her dead calf.

January 10, 2021

What’s Killing Killer Whales?

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