Study Shows Killer Whales, Dolphins Cooperatively Hunting For Chinook Salmon In British Columbia Waters

Killer whales or orca have been observed hunting with Pacific white-sided dolphins in the waters off British Columbia, Canada and sharing fish scraps with them after making a kill, according to research published in Scientific Reports. The authors suggest that the findings represent the first documented recording of cooperative hunting between orca and dolphins.

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Views At Congressional Hearing On Columbia River Sea Lion Predation On Salmon Lean Toward More Lethal Removals

Speakers at a congressional hearing to consider the issue of predatory sea lions in the lower Columbia River weighed heavily towards recommending that more of the animals should be lethally removed from the river to protect salmon and steelhead.

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California Board Approves $87 Million In Grants For Wildlife Projects, Advances Salmon Strategy For Hotter Future

California’s Wildlife Conservation Board has approved $87,125,538 in grants for 16 projects across 14 counties to protect critical wildlife habitat, restore rivers and streams, and conserve culturally and ecologically significant lands.

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Endangered Snake River Sockeye 2025 Return Near Average, 1,106 Fish (Hatchery And Wild) Make It To Lower Granite Dam

The run of endangered Snake River sockeye salmon this year was near the 10-year average, as counted at Lower Granite Dam, but far below last year’s seventh largest run of the endangered fish.

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Environmental DNA: UW Researcher Pulls Salmon E-DNA Out Of The Air To Estimate Number Of Fish

During the annual salmon run last fall, University of Washington researchers pulled salmon DNA out of thin air and used it to estimate the number of fish that passed through the adjacent river. Aden Yincheong Ip, a UW research scientist of marine and environmental affairs, began formulating the driving hypothesis for the study while hiking on the Olympic Peninsula.

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Groups Restore Fish Passage For ESA-Listed Bull Trout With Emergency Flume To Reconnect Habitat

July through September are the dryest and hottest parts of the year, with 2025 being the third consecutive year of drought in the Yakima River Basin.

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Invasive, Destructive Chinese Mitten Crab Found In Willamette River, Biologists Work To Determine How Widespread

A Chinese mitten crab, a prohibited species in Oregon, was found in the Willamette River near Portland’s Sellwood Bridge and reported to the Oregon Department of Fish and Wildlife on Nov. 17.

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Trump Administration Proposes Four Revisions To Endangered Species Act It Says Will Restore ESA’s ‘Original Intent’

The U.S. Fish and Wildlife Service has announced four proposed rules that it says “will restore Endangered Species Act regulations to their proven 2019 and 2020 framework.” If approved, the new rules would prohibit critical habitat designation for species threatened by climate change and allow economic impacts to be considered in species protections.

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Norwegian Researchers Use ‘Neural Network” Of Salmon Scales To Distinguish Wild From Escaped Farmed Salmon (300,000 Fish A Year)

A new paper in Biology Methods and Protocols, published by Oxford University Press, finds that researchers can now distinguish wild from farmed salmon using “deep learning,” potentially greatly improving strategies for environmental protection.

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ODFW Getting Reports Of Avian Flu Bird Deaths, Most Cases Occurring In Willamette Valley Among Geese, Raptors

People across Oregon are being urged to avoid contact with sick or dead birds as highly pathogenic avian influenza (HPAI) continues to impact wild and domestic bird populations across the state. There is currently no effective treatment for wild and domestic birds, and the virus can spread rapidly among bird populations and potentially to other wildlife.

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CDFW Says One Year After Klamath River Dam Removals ‘Salmon Are Everywhere,’ Reoccupying Historic Habitat

A little more than a year after the removal of four hydroelectric dams on the Klamath River, California Department of Fish and Wildlife scientists are seeing salmon reoccupying just about every corner of their historic habitat.

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New Study Details Stellar Sea Lion Consumption Of Young Chinook Salmon Off Washington Coast 

Steller and California sea lions are known to take a big chunk of early migrating adult salmon and steelhead in the Columbia River, but a recent study has also found that Steller sea lions are eating more than 2 million young Chinook salmon along Washington’s northwest coastline.

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Contract Awarded To Remove Causeway At Mouth Of Yakima River; Harms Salmon Migration, Increases Predation, Algal Blooms

The U.S. Army Corps of Engineers Walla Walla District, in partnership with the Washington Department of Fish and Wildlife, the Yakama Nation, the Washington Department of Ecology, and the Mid-Columbia Fisheries Enhancement Group has awarded a $1.2 million construction contract to PIPKIN INC. for the Bateman Island Causeway removal project.

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Plaintiffs In Salmon BiOp Case Seek To Dismiss Two-Year Old Idaho Request That Judge Rule Out Dam Breaching As Remedy

The most recent filings in U.S. District Court in Portland by plaintiffs in the latest challenge to the biological opinion of the federal Columbia/Snake river hydropower system’s impacts on salmon and steelhead does not have to do with impacts by the federal dams, but instead it is a plea to dismiss a nearly two-year old counterclaim by the state of Idaho.

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Scientists Review Fish Passage Center’s Latest Comparative Salmon Survival Study, Highlight Data On Steelhead Overshoot, Fallback, Straying

A team of scientists completed its sixteenth consecutive annual review of the Fish Passage Center’s draft Comparative Survival Study of salmon and steelhead that migrate past federal dams in the Columbia and Snake rivers.

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Tool Use By Wolves? Study (With Video) Shows Wolves In British Columbia Pulling Crab Traps Out Of Ocean

Wild wolves living in Haíɫzaqv (Heiltsuk) Territory on BC’s central coast have learned to pull crab traps out of the ocean—behavior that represents the first documented case of potential tool use in the species, according to a new study.

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Washington Working Group Produces Report Assessing Impacts Of Avian Predation On Salmon, Steelhead, Identifies Knowledge Gaps

How and where water bird predation impacts juvenile salmon and steelhead must be considered on a case- by-case basis before taking action against the birds, according to a new report being considered at this week’s Washington Fish and Wildlife Commission meeting.

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Photoperiodism In Fish: Researchers First To Discover Salmon Use Pituitary Glands To ‘See’ When It’s Time To Migrate

One of the enduring ichthyological mysteries is how migratory fish know when it is time to move from their winter to summer habitats. The ability to tell when the seasons are changing is crucial for a wide range of major life events, including feeding and spawning, as well as migration.

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British Columbia Researchers Confirm Two Distinct Subpopulations Of West Coast Transient Killer Whales: Inner Coast And Outer Coast

New research has confirmed that West Coast transient killer whales who live between British Columbia and California are two distinct subpopulations: inner and outer coast transients.

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Preliminary 2025 Alaska Commercial Salmon Harvest Pegged At 194.8 Million Salmon, 88 Percent Increase Over Last Year

The Alaska Department of Fish and Game has published preliminary harvest and value figures for the 2025 Alaska Commercial Salmon Fishery.

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Study Details Damage To Forests Caused By 2021 Heat Dome; Reduced Photosynthesis, More Pests, Disease

A satellite imagery analysis shows that the 2021 “heat dome” scorched almost 5% of the forested area in western Oregon and western Washington, turning foliage in canopies from a healthy green to red or orange, sometimes within a matter of hours.

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Trump Administration Sued Over Lack Of ESA Action On Olympic Peninsula Marmots, Only 2,000 To 4,000 Remain

The Center for Biological Diversity has sued the Trump administration for what it says is a failure to decide whether to protect Olympic marmots, a rare species that lives only on the Olympic Peninsula in Washington state. The marmots are threatened by climate change and predation by coyotes.

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Budget Cuts Lead To Shut Down Of Washington’s Skamania Fish Hatchery, Fewer Steelhead For Columbia River Basin

The Skamania fish hatchery on the Washougal River in Washington is shutting down due to budget cuts at the state’s fishery agency that have also resulted in layoffs and cuts in monitoring and fisheries management.

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More Briefings Filed In Support Of Injunction Calling For Operational Changes At Columbia/Snake Dams To Protect Salmon, Steelhead

The state of Washington and Columbia River tribes are lining up in U.S. District Court to support a request for a preliminary injunction filed Oct. 14 by Earthjustice seeking emergency operational changes at federal Columbia and Snake river dams aimed at protecting endangered salmon and steelhead from harms caused by dam operations.

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From 99 Sockeye In 1980s To 91,000 Today: Recovery Efforts Lead To Record Number Of Sockeye Returning To Washington’s Baker Lake This Year

The Washington Department of Fish and Wildlife, the Upper Skagit Indian Tribe, the Swinomish Indian Tribal Community, and Puget Sound Energy announced that this year a record number of sockeye salmon returned to northwest Washington’s Skagit Bay and the Skagit River on their annual spawning migration.

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