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Exploring the Discovery of a New Oceanic Orca Population with Josh McInnes

How To Protect The Ocean

Release Date: 03/25/2024

What the Wildfire Smoke in Your Sky Has to Do With the Ocean show art What the Wildfire Smoke in Your Sky Has to Do With the Ocean

How To Protect The Ocean

For a week straight, Andrew watched his own sky turn orange outside Toronto as smoke from nearly 900 wildfires burning across Canada, most of them following the boreal forest from the east coast to Northwestern Ontario, drifted south into the US and back again. He walks through what actually happened on the ground: which towns and First Nations were evacuated, how bad the air quality got (Toronto briefly had the worst AQI in the world), and why northwestern Ontario, not a hugely populated area but home to vulnerable First Nations communities, bore the brunt of it. Then he digs into why this...

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How To Protect The Ocean

If you've ever felt a hard strike, fought a fish, and reeled up nothing but a head, you already know what shark depredation feels like. In this episode, Andrew breaks down a new study that tracked shark depredation across the entire Atlantic coast, from Maine to Texas and the US Caribbean, going back a full century to figure out why it's happening more now than ever before. The study found at least 51 targeted fish stocks affected and 22 shark species involved, with bull sharks and sandbar sharks showing up most often. But the real story isn't that sharks are out of control. It's that...

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How To Protect The Ocean

A thousand meters down off the coast of Brazil, a deep-sea robot caught something almost no one has ever filmed alive: a giant open ocean octopus calmly eating a jellyfish. That moment, captured by the Schmidt Ocean Institute's ROV SuBastian aboard the research vessel Falkor (too), was part of a wider expedition that turned up more than two dozen species new to science, from glowing worms to glass squid to strange colonial siphonophores. The discovery points to something bigger than one expedition. The ocean's midwater, the vast zone between the sunlit surface and the seafloor, is by volume...

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How To Protect The Ocean

In 1978, an Exxon scientist asked a question in capital letters: were the oceans dissolving coral reefs? By 1982, Exxon's own scientists had the answer, in writing. So did Shell by 1986. This episode traces a newly published Oxford University study that dug through more than fourteen thousand pages of fossil fuel industry documents and found that the world's biggest oil and gas companies understood, decades before the public did, exactly how their product would wreck coral reefs. We walk through what the industry knew and when, how a funded think tank report in 2012 was built to look like an...

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How To Protect The Ocean

For more than a decade, almost 2,000 volunteers have walked California's beaches with clipboards, counting every swimmer, surfer, angler, and boat they see. It sounds simple, maybe even a little strange. But that pile of data, more than a million tally marks collected between 2012 and 2020, just answered a question marine scientists have debated for years: do marine protected areas actually work in the real world, not just on paper? In this episode, we walk through what researchers found when they finally pulled that decade of volunteer data together. We look at how the MPA Watch program...

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How To Protect The Ocean

Right now, somewhere in the open ocean, a raft the size of a small table is drifting with no one steering it. It's called a fish aggregating device, or FAD, and the tuna industry drops thousands of them into the water every year to lure fish to the surface. A new study published in Science Advances tracked where these rafts actually end up, and the answer is unsettling: they've likely drifted through more than half of the world's marine protected areas by total area, with over 6,300 strandings recorded across 174 protected areas in 53 countries and territories. When a drifting FAD washes onto...

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How To Protect The Ocean

Scientists have uncovered an incredible secret hiding in plain sight on coral reefs. Some tropical sea sponges are able to harvest sunlight through microscopic algae living inside their tissues, giving them a surprising source of energy. It is a discovery that challenges what we thought we knew about one of the ocean’s oldest animals. In this episode, we explore how these ancient filter feeders use a partnership with algae to survive and thrive in nutrient-poor tropical waters. You’ll learn why this relationship is similar to the one that helps corals build reefs and why researchers...

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How To Protect The Ocean

Sea level rise isn’t always dramatic. Long before homes disappear beneath the waves, coastal communities can lose something even more essential: safe drinking water. In this episode, we explore how saltwater is quietly moving into freshwater supplies across coastal Bangladesh and why this hidden impact deserves far more attention. Using a recent Mongabay commentary as a starting point, you’ll learn how rising seas, changing rivers, and human activities are combining to reshape one of the world’s largest river deltas. The consequences extend beyond drinking water to agriculture, public...

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How To Protect The Ocean

The world just pledged more than $6.4 billion for ocean conservation at the 2026 Our Ocean Conference, but history tells us that big announcements do not always lead to meaningful action. In this episode, we unpack what was actually announced, who made the commitments, and why the headline number is only part of the story. You’ll learn why this year’s conference in Kenya was especially significant and what makes these commitments different from legally binding agreements. We also explore the question that rarely gets asked: how do we know whether these promises will ever become real...

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How To Protect The Ocean

Thousands of seabirds are washing ashore along California’s coast, starving, exhausted, and unable to find enough food. While the images are heartbreaking, scientists say the birds are only the visible symptom of a much larger problem unfolding beneath the surface. In this episode, we explore why seabirds are dying and what their struggle reveals about the health of the Pacific Ocean. You’ll learn how marine heat waves are disrupting one of the world’s most productive ocean ecosystems by reducing nutrients, shrinking fish populations, and breaking apart the marine food web. We also look...

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More Episodes

Andrew Lewin interviews Josh McInnes from the University of British Columbia about his groundbreaking research on killer whales. They discuss Josh's work on transient orca populations and the discovery of a potential new orca population in oceanic waters. Learn about Josh's background, including his experience working on whale watching boats and delivering lectures on orcas. Dive into the reasons behind Josh pursuing a master's degree and explore the fascinating world of orca research and conservation.

Tune in for an insightful look at orcas and the exciting discoveries in marine science!

Connect with Josh on LinkedIn: https://www.linkedin.com/in/josh-mcinnes-69236197/

Follow a career in conservation: https://www.conservation-careers.com/online-training/ Use the code SUFB to get 33% off courses and the careers program.
 

Discovery of a Potential New Oceanic Population of Killer Whales

The podcast episode highlighted a significant observation regarding the potential discovery of a new oceanic population of killer whales. The observation dates back to 1997 when a large herd of female sperm whales was encountered 200 kilometers off the California coast. Renowned cytologist Bob Pittman observed these sperm whales being attacked by a group of 35 unknown killer whales, exhibiting cookie-cutter bite marks, indicating a unique and unidentified population.

This initial observation led to further research into these unknown killer whales. Subsequent fieldwork off the California and Oregon coasts revealed more interactions with these mysterious killer whales that did not align with the typical descriptions of resident or transient killer whale populations in the area. These findings have sparked the development of a potential new oceanic population of killer whales.

The significance of this discovery lies in shedding light on previously unknown or poorly understood killer whale populations. Understanding the presence and behavior of these new populations is crucial for conservation efforts and marine ecosystem management. By identifying and studying these unknown killer whales, researchers can gain insights into their ecological roles, interactions with other species, and potential threats they may face. This information is vital for developing targeted conservation strategies to protect these newly discovered populations and ensure the overall health of marine ecosystems.

  • The designation of protective status for orcas in the state of Oregon, in addition to federal protection, is crucial for emphasizing the need for conservation efforts at both state and federal levels. State-level protection in Oregon signifies a proactive approach towards safeguarding the orca population within state waters, complementing existing federal protections. This dual protection ensures that orcas are safeguarded against various threats, including ship strikes, vessel noise, pollution, overfishing, and habitat degradation.

  • The state-level protection in Oregon is particularly significant due to the state's unique role in providing essential habitat for orcas, such as the Columbia River Chinook salmon population, which is crucial for the Southern resident killer whales. By designating orcas as protected species within state waters, Oregon can enforce regulations and management strategies to mitigate threats and ensure the conservation of these iconic marine mammals.

  • The collaboration between state and federal authorities in protecting orcas sets a precedent for effective conservation efforts that recognize the importance of addressing threats at multiple levels. By working together, state and federal agencies can coordinate conservation measures, share resources, and implement comprehensive strategies to protect orcas and their habitats. This integrated approach enhances the effectiveness of conservation initiatives and promotes the long-term sustainability of orca populations in Oregon and beyond.

  • Overfishing: Josh mentions that overfishing is a significant threat to killer whales, especially for populations like the Southern Resident killer whales that rely heavily on Chinook salmon for their diet. Declining fish stocks due to overfishing can lead to food scarcity for killer whales, impacting their energetic and caloric intake. This highlights the importance of sustainable fishing practices and effective fisheries management to ensure an adequate food supply for killer whales.

  • Vessel Noise: Another threat discussed during the interviewis vessel noise, which can disrupt the communication and hunting behaviors of killer whales. The increasing number of boats, including whale-watching vessels, can contribute to underwater noise pollution, affecting the ability of killer whales to navigate, communicate, and locate prey. Mitigation measures such as reducing vessel speed, implementing noise-reducing technologies, and establishing marine protected areas can help minimize the impact of vessel noise on killer whales.

  • Pollution: Josh also mentions the presence of pollutants in killer whales, including new toxins from sources like wildfires. Pollution can accumulate in the blubber and bodies of killer whales, affecting their endocrine systems and overall health. Addressing pollution sources, implementing stricter regulations on chemical discharges, and promoting ecosystem health can help reduce the exposure of killer whales to harmful pollutants and ensure their well-being.

  • Hatchery Salmon Quality: The quality of hatchery salmon is highlighted as a concern for killer whales, as hatchery fish may not provide the same nutritional value as wild salmon. If hatchery salmon outcompete wild salmon, killer whales may receive fewer nutrients from their primary food source, impacting their overall health and reproductive success. Ensuring the availability of high-quality wild salmon through habitat restoration, sustainable fisheries practices, and monitoring hatchery operations can support the dietary needs of killer whales.

In conclusion, the various threats faced by killer whales, including overfishing, vessel noise, pollution, and hatchery salmon quality, underscore the need for comprehensive conservation strategies. These strategies should focus on sustainable fisheries management, reducing anthropogenic disturbances, addressing pollution sources, and promoting the health of marine ecosystems to safeguard the well-being of killer whale populations.