The Science of Sustainability

Two Endangered Icons: Southern Resident Killer Whales and Chinook Salmon

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pdf Orcas Educator Guide ( pdf ) A resource for using QUEST video and blogs in the classroom; created by PBS partner station KCTS 9

Kenneth Balcomb, senior scientist at the Center for Whale Research in Friday Harbor, Washington, explains the connection between the Southern Resident killer whales (orcas) and chinook salmon. The whales prefer chinook salmon over any other food source and scientists have determined there’s a tight correlation between the two populations. When the salmon are abundant, the whales thrive. When the salmon are scarce, the Southern Resident orca population suffers.

Category: Biology, Environment

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Jennifer Morton

About the Author ()

Jennifer Morton is a science education specialist at KCTS 9 Television in Seattle, WA. She started at KCTS 9 as Outreach Coordinator for the PBS series Bill Nye the Science Guy and has continued to be involved in outreach and education with KCTS over the past 10 years. She has a degree in Geology from the University of Vermont and a keen interest in science education. She also has a wasps’ nest hanging in her living room.
  • Brad Wellman

    I have great respect for Ken and he is correct on all statements but one. He said that the government up north (In Canada) is more enlightened. If you ask any Canadian conservationist they will agree with me. The British Columbia and Canadian governments are far behind the state of Washington and the US when it comes to environmental regulation. In fact Canadians usually speak about the US as the example to emulate when talking about environmental regulation.

    Resident Orca Whales need salmon for their survival and salmon need intact old growth forests to protect the rivers that they spawn in for their survival. This is why I consider
    Salmon and Orca whales, FOREST CREATURES.

    We need to protect what is left of British Columbia’s old growth forests to ensure the survival of salmon and the orca whales that depend on them as their main food source.

  • http://www.whalefacts.org/are-whales-endangered/ Illy

    Very interesting find. It seems that they can't live without their salmon if they choose not to show when it isn't abundant.