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These Vets Make House Calls for Killer Whales

December 27, 2023 —  One day last September, a team of scientists clambered onto a small boat and set out into the Salish Sea, searching for an endangered population of orcas. The Southern Resident killer whales, one of several distinct orca communities that inhabit the Pacific Northwest, can be elusive, so the researchers were delighted to find a small pod of them. But as they drew closer, a putrid smell washed over the boat.

The scientists eyed each other with suspicion before it dawned on them: The odor was coming from the clouds of mist that the whales were expelling from their blowholes. “Everybody is allowed to have bad breath every now and then, but this was not just bad breath,” said Dr. Hendrik Nollens, the vice president of wildlife health for the San Diego Zoo Wildlife Alliance, who was on the boat. “There was something going on.”

Read the full article at the New York Times

OREGON: Oregon officials consider adding southern resident orcas to state endangered species list

October 3, 2023 — The number of southern resident orcas that forage along the Oregon Coast has been on the decline for decades as they struggle to find food and confront boats and pollution.

Just 73 are left, down from a peak of nearly 100 in the late 1990s. Officials from the National Oceanic and Atmospheric Administration’s fisheries division project the number could decline by half during the next 20 years.

Now, the state’s Fish and Wildlife Commission will weigh whether to add the orcas to the state’s endangered species list, creating more protections for the orcas and directing more conservation money toward their survival. The Oregon Department of Fish and Wildlife on Thursday produced an assessment of the situation that the commission will review. Southern resident orcas are already listed as endangered under the federal Endangered Species Act and in Washington and Canada, where they also live and forage. Being listed under Oregon’s Endangered Species Act would offer even greater protections, according to Miyoko Sakashita, oceans program director for the nonprofit Center for Biological Diversity.

“While the federal listing is helpful, some of its provisions only apply to federal actions,” Sakashita said via email. “By having a state listing, the state has more powerful tools to address threats to orcas and their salmon prey.”

If listed, the Oregon Fish and Wildlife Department would need to develop a management plan and coordinate with other state agencies to take action and address the primary threats to orcas in Oregon. The commission is scheduled to decide whether to add the southern resident orca to the state’s endangered species list by February 2024.

The primary threats to southern resident orca survival include a lack of salmon to eat, pollution from chemicals and oil spills and disturbances from boats, including sounds from the boats.

Read the full article the Oregon Capital Chronicle 

Activists urge reforms after Bering Sea trawlers haul up 9 dead orcas

September 28, 2023 — Federal officials are looking into the deaths of nine orcas that were hauled up by groundfish trawlers in Bering Sea and Aleutian Islands fisheries this year, and conservation groups say more needs to be done to prevent such deaths.

According to NOAA Fisheries, a tenth whale was released alive, but the nine other orcas incidentally caught in trawl nets weren’t so lucky.

“NOAA Fisheries is analyzing collected data to determine the cause of injury or death and determine which stocks these whales belong to through a review of genetic information,” said Julie Fair, public affairs officer with the federal agency’s Alaska office, reading from a statement published Thursday. She declined to be interviewed, except to read the statement aloud.

Killer whales are protected under the Marine Mammal Protection Act, which requires boat owners or operators to report the deaths and injuries of the mammals during commercial fishing and survey operations.

Fair said NOAA Fisheries monitors bycatch of protected species to determine whether the animals were dead before being caught or were killed or seriously injured by commercial gear.

The vessels involved in these incidents weren’t named, but Fair said the boats involved were all required to carry two federal observers on board.

This isn’t the first time killer whales have been caught in trawl gear off Alaska, but the numbers seem to have spiked this year.

Read the full article at KYUK

Fishing ban may only be one step toward preventing king salmon, orca extinctions

July 25, 2023 — The king salmon population in Alaska has dropped 60% since 1984, according to the Environmental Protection Agency.

A lawsuit aiming to curb the extinction of the salmon and orcas through limiting human consumption of the fish recently led to the shutdown of one of the largest fisheries in the world. The Wild Fish Conservancy, who filed the lawsuit, argued that the fate of orcas and king salmon were intertwined — the fish, known for their size and high fat content, are the whales’ preferred meal — and human consumption leaves little of the food source for the 73 remaining resident orcas off the coast of Seattle.

Now, some say halting the fishing of king salmon, also known as Chinook salmon, is only the start of preventing the species’ extinction. The other factor? Climate change.

Regardless whether king salmon are at risk of extinction because of human fishing or climate change, Corby Kummer, executive director of the Food and Society Policy program at the Aspen Institute, told Boston Public Radio the takeaway is the same: “We shouldn’t be catching and eating king salmon, period.”

Read the full article GBH

Starving Orcas and the Fate of Alaska’s Disappearing King Salmon

July 23, 2023 — In the waters of Puget Sound outside Seattle, 73 beloved and endangered orcas, known as the Southern Residents, are on the hunt, clicking. Using sound like a searchlight, they patrol the chilly depths. When they locate a target, they dive, sinking sharp white teeth into their preferred food, the fatty coral-colored flesh of king salmon.

But in recent weeks, this ancient rhythm of the Pacific Northwest was being negotiated not just at sea but also in a federal courtroom in downtown Seattle, where on May 2 a district court judge issued an order effectively shutting down Alaska’s biggest king salmon fishery, one of the largest remaining in the world.

To the Wild Fish Conservancy, the Washington State-based environmental group that filed the lawsuit, the fates of the two totemic animals are intimately bound. The orcas need the salmon to eat, and if we stop fishing them, the conservancy argues, we save the whales.

But the State of Alaska, the National Marine Fisheries Service and the Alaska Trollers Association — all defendants in the suit — argued that shutting down the fishery would have little impact on either, and won a last-minute reprieve that allowed Alaska fishermen to put their lines in the water when the season began on July 1. The Ninth Circuit Court of Appeals in San Francisco will decide what happens next.

Regardless of the lawsuit’s outcome, though, there is broad agreement that the king salmon, also known as Chinook, are in crisis. After decades of environmental pressures like dams and pollution, the king populations are at historic lows, and scientists are struggling to understand the escalating effects of climate change. The fish are also smaller than they have ever been. Gone are the taxidermied 70-pounders that ended up on the walls of fisherman’s bars.

Some argue that the only way to save the species is to stop catching and eating them at all — if even that would be enough.

“Everyone is fighting each other for the last king salmon,” said Mark Stopha, a retired fish biologist with the state Department of Fish and Game and a longtime fish seller in Juneau. “It’s something a lot bigger than fisheries management — there’s something that’s going on with the changing climate. We know the ocean’s getting warmer.”

While kings make up less than 1 percent of Alaska’s wild catch, they are the official state fish because of their wide-ranging economic importance, a vivid symbol of Alaska, with its cool waters and pristine habitat. Sport, commercial and subsistence king fishing has sustained generations of rural communities. The fish are central to Alaska Native culture.

Read the full article at the New York Times

Body Condition of Endangered Killer Whales Reflects Salmon Numbers and Odds of Survival

August 19, 2021 — The following was released by NOAA Fisheries:

The body condition of endangered Southern Resident killer whales reflects changes in Chinook salmon numbers in the Fraser River and the Salish Sea. This is according to new research using aerial photogrammetry from drones to track changes in their body condition over time.

The study, titled “Survival of the Fattest: Linking body condition to prey availability and survivorship of killer whales,” also found that poor body condition makes the whales more likely to die.

The new findings published today in Ecosphere highlight the value of monitoring these endangered whales through aerial photogrammetry. This method can detect individual whales declining in condition, which can provide an early warning system that they may die.

The 74 Southern Resident orcas make up three pods known as J, K, and L. Each pod is made up of distinct social and family groups.

The research showed that the body condition of J pod whales improved when Chinook salmon abundance was higher in the Salish Sea and in Fraser River tributaries. L pod body condition improved when Chinook salmon abundance was higher in Puget Sound tributaries, although that relationship was weaker than J pod and Fraser River Chinook. K pod whales had no clear relationship to the salmon populations examined in the study. However,  whales in K pod also experienced little change in their body condition during the study period.

K and L pods spend more time foraging on the outer coast of Washington and Oregon than J pod. Their more varied diet is more challenging to relate to changes in their body condition. In contrast, J pod depends to a greater extent on Chinook salmon. Differences in body condition between the three pods reflects distinct foraging patterns, while the condition of individual whales provides insights into their health, researchers found.

Read the full release here

Critical habitat for killer whales extended south along California coast

August 12, 2021 — The administration of U.S. President Joe Biden has extended critical habitat designations for the highly endangered Southern Resident orca population, to cover nearly 16,000 square miles of Pacific waters from Washington south to Point Sur, California.

The whales currently have had critical habitat protected in the inland waters of Washington state, where the Southern orca population of just 75 animals is highly dependent on chinook salmon – stocks that themselves are in danger from habitat loss and pollution in the region.

Read the full story at Seafood Source

Critical habitat for killer whales extended south along California coast

August 6, 2021 — The Biden administration extended critical habitat designations for the highly endangered Southern Resident orca population, to cover nearly 16,000 square miles of Pacific waters from Washington south to Point Sur, Calif.

The whales currently have had critical habitat protected in the inland waters of Washington state, where the Southern orca population of just 75 animals is highly dependent on chinook salmon – stocks that themselves are in danger from habitat loss and pollution in the region.

A final order from NMFS, published in the Aug. 2 Federal Register and taking effect Sept.1, maintains the Puget Sound protected region and extends the critical habitat designation out to the 200-meter (656-foot) sea floor contour.

“This revision is based on over a decade of research that improved our knowledge of Southern Resident killer whales’ geographic range, diet, and habitat needs, including their movements up and down the West Coast,” according to a NMFS announcement.

Read the full story at National Fisherman

Higher Vessel Speeds Offset Salmon Abundance for Endangered Orcas, Reducing Chance of Catching Prey

August 4, 2021 — The following was released by NOAA Fisheries:

Increased abundance of salmon in the inland waters of the Salish Sea increased the odds of endangered Southern Resident killer whales capturing salmon as prey, but increased speeds of nearby boats did just the opposite, according to new research findings.

The research was led by NOAA Fisheries’ Northwest Fisheries Science Center. It found that the orcas descended more slowly, and took longer dives to capture prey, when nearby boats had navigational sonar switched on. The sonar from private and commercial vessels directly overlaps the main sound frequencies the whales use to hunt. This may mask the whales’ signals and force them to expend more energy to catch prey.

“That suggests that it may prolong their effort to dive in search of prey, which like all marine mammals they have to do on a breath hold—so they can stay underwater only so long,” said Marla Holt, research wildlife biologist at the Northwest Fisheries Science Center and lead author of the new research. Researchers used suction-cup tags that record whale movements and sound to track and analyze their behavior and use of sound to hunt.

Earlier research found that the faster nearby vessels traveled, the greater noise the endangered killer whales experienced. That could help explain why higher speeds of nearby vessels were associated with reduced odds of the whales capturing prey. Faster vessels might also seem more unpredictable to the whales, possibly distracting them as they close in on prey, Holt said.

“Consequences of reduced food intake include negative impacts on the whales’ ability to meet their energetic requirements to support key life functions, including growth and reproduction,” the scientists wrote in the new research paper published in the journal Marine Environmental Research.

Read the full release here

Expanded Critical Habitat Signals Much of West Coast Contributes to Recovery of Endangered Killer Whales

August 2, 2021 — The following was released by NOAA Fisheries:

Today we announced that we are expanding designated critical habitat for endangered Southern Resident killer whales. They will now include most coastal waters from Washington to Monterey Bay in California—formerly they encompassed only most of the inland waters of Washington. This designation encompasses waters where we now know that the Southern Residents hunt for salmon from West Coast Rivers and other marine species.

We appreciate the nearly 2,000 comments on our proposal to expand the designated critical habitat. The Endangered Species Act defines critical habitat as areas with “physical or biological features essential to conservation of the species” that may need special protection.

While the expansion of critical habitat recognizes that the whales forage across much of the West Coast, it is unlikely to extensively affect coastal activities, such as fishing. That is because NOAA Fisheries and the Pacific Fishery Management Council, which provides recommendations to NOAA Fisheries on fishing seasons and regulations, already consider killer whales and Chinook salmon when setting salmon harvest quotas. NOAA Fisheries is currently taking comments on a proposal from the Council to limit commercial and recreational fishing in certain areas as far south as Monterey Bay in California in years when salmon returns are expected to be low.

NOAA Fisheries completed a biological opinion on the operation of dams on the Columbia and Snake River in 2020. It considered the potential impacts on Southern Residents and their prey since they have long been known to feed on Columbia and Snake River salmon. The opinion found that hatchery salmon more than make up for any reduction in salmon numbers related to the operation of the dams.

Recent research based on the DNA signatures of West Coast salmon stocks showed that killer whales prey on salmon from a diversity of West Coast Rivers. They span as far south as the Sacramento River and north to Canada and Alaska. Recovery actions for killer whales include:

  • Release of additional hatchery fish to supplement their prey
  • Extensive habitat restoration to improve natural production of salmon in the longer term

The designation of critical habitat provides an extra layer of protection when a federal agency takes an action that could impact the critical habitat of the whales. It also sends the message that everyone on the West Coast has a role to play in supporting the whales’ recovery.

“While the Southern Residents may be best known in the Pacific Northwest, the whole West Coast can contribute to recovery of the whales and the salmon that they rely on,” said Lynne Barre, recovery coordinator for the Southern Residents. “Regardless of where they are foraging, they feed on a mix of salmon from different West Coast rivers. That means the way we all use water, the way we protect habitat, how we handle our storm runoff—it all makes a difference.”

The newly designated critical habitat includes coastal waters from 6.1 to 200 meters deep with three essential physical and biological features:

  • Water quality to support growth and development
  • Prey species of sufficient quantity, quality, and availability to support individual growth, reproduction, and development, as well as overall population growth
  • Passage conditions to allow for migration, resting, and foraging

There was one notable change from the coastal critical habitat NOAA Fisheries originally proposed in November 2019. This was changed to reduce the excluded buffer area around the excluded Quinault Range Site, which is used by the Navy for various training and testing activities in support of military readiness. The final designation also includes a biological explanation of how human-induced noise impacts the conservation value of the designated critical habitat for endangered Southern Resident killer whales.

Read the full release here

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