Saving Seafood

Bering Sea heat wave cited as trigger for nosedive in Yukon River Chinook salmon

July 13, 2026 — The intense marine heat wave conditions that began roiling the Bering Sea in about 2016 resulted in the lowest winter sea ice extent measured in 150 years, widespread bird and marine mammal die-offs, a drastic shift in fish populations and a crash of snow crab stocks.

Now new research is tying the marine heat wave to the recent collapse of Yukon River Chinook salmon.

A study published in April, written by scientists at the National Oceanic and Atmospheric Administration’s Alaska Fisheries Science Center and University of Alaska Fairbanks, showed the correlation between the extreme heat wave conditions and the nosedive in Yukon River Chinook stocks. The heat wave was accompanied by a dramatic increase in deaths of older juvenile and adult Chinook that, had they survived, would have returned from the ocean to freshwater spawning grounds, the study found.

The study was published in the journal Ecological Applications.

The Yukon River’s runs of Chinook, also called king salmon, have been in a long-term decline since their past heyday, when they numbered in the hundreds of thousands and the river was one of the biggest sources of that salmon species.

The sharp downturn in recent years resulted in a 2022 return that was the lowest on record. Widespread fishery closures have been in effect for years along the Yukon River system in both Alaska and Canada.

Read the full article at Alaska Beacon

US bill would allow tribes to kill more sea lions along Columbia River

July 13, 2026 — A new bill introduced in U.S. Congress would authorize Native American tribes in Southwest Washington to kill some of the sea lions eating salmon in the Columbia River.

California and stellar sea lion populations have ballooned in the Pacific Northwest under the Marine Mammal Protection Act (MMPA); since 1950, the population has increased from roughly 10,000 to 250,000. Salmon are a major source of prey for sea lions, and the increased pinniped population has placed more pressure on the fish.

Read the full article at SeafoodSource

The world’s longest marine heat wave upended ocean life across the Pacific

August 8, 2025 — More than a decade since the start of the longest ocean warming event ever recorded, scientists are still working to understand the extent of its impacts. This unprecedented heat wave, nicknamed “The Blob,” stretched thousands of kilometres over North America’s western coastal waters, affecting everything from the smallest plankton to the largest marine mammals.

Between 2014 and 2016, when this heat wave occurred, water temperatures soared between two to six degrees C above average.

One would be forgiven for thinking this is no big deal. After all, temperatures fluctuate more than this on land most days. But not so in the ocean, where temperatures are normally much more stable because of the enormous amount of energy it takes to change them.

Although the duration of this multi-year warming event made it the first of its kind, it offers a glimpse into a future with climate change, where heat waves like this will be more frequent.

Read the full article at the Conversation

As lawmakers take up NOAA funding, conservation groups demand $300M for endangered marine species

May 3, 2024 — With budget season well underway on Capitol Hill, a coalition of environmental groups renewed calls for lawmakers to commit a significant chunk of funding to federal programs aimed at marine wildlife conservation.

Writing in a letter last week to leaders of the House and Senate appropriations committees, the 80 or so conservation advocates led by the Center for Biological Diversity sounded the alarm about the Protected Resources Science and Management Program, part of the National Oceanic and Atmospheric Administration’s National Marine Fisheries Service.

The protected resources subprogram, which is responsible for overseeing the welfare of marine mammals such as whales and dolphins as well as sea turtles and other species, has been “underfunded for decades and desperately needs more funding to protect, conserve and recover our nation’s imperiled marine species,” the groups wrote.

In its 2025 budget request, NOAA asked Congress for roughly $266 million for its Protected Resources Science and Management Program, which it said aims to “assess, understand and conserve the health of protected species, the ecosystems that sustain them and the communities that value and depend on them.”

Read the full story at Courthouse News Service

 

It’s the beginning of seal pupping season in Maine

April 7, 2022 — April marks the beginning of the time of year when harbor seals start giving birth to pups.

Typically, pups can be born as early as the beginning of April, but the season gets into full swing from May to June, according to the Marine Mammals of Maine website.

Baby harbor seals can appear to be stranded and alone on Maine beaches, but the mothers are typically foraging for food nearby and feel as though the babies can be safely left alone, according to the Maine Department of Marine Resources. Seal pups may be left alone by their mothers for up to 24 hours.

Read the full story at the Bangor Daily News

 

Suit: Agencies fail to protect marine species from oil

January 27, 2022 — A conservation group says in a lawsuit that the U.S. government failed to protect endangered whales and other animals by underestimating the potential for an oil spill like a recent crude pipeline leak off California’s coast.

The Center for Biological Diversity filed a lawsuit in federal court Wednesday saying Interior Department agencies and the National Marine Fisheries Service didn’t ensure offshore oil and gas production wouldn’t jeopardize endangered and threatened species in accordance with U.S. law.

The lawsuit says the Service found in a 2017 analysis that oil and gas production wouldn’t likely have an adverse effect on threatened marine life off California’s coast, there was a low likelihood of an offshore oil spill and if one occurred, it would likely involve no more than 8,400 gallons (31,800 liters). The suit asks the court to vacate the analysis and bar new oil activity unless government agencies comply with the law protecting endangered species.

Read the full story from the Associated Press

 

On the Water: A Look at Life as an Observer October 13, 2021

October 18, 2021 — Keenan Carpenter has always loved being on the water. Growing up in Florida, he dreamed of a pro fishing career. Today, you can often find him casting his rod from the beach or on a kayak in his spare time. But as he moved through his studies in marine sciences at Jacksonville University, he found another way to channel his affinity for fishing and his background in sciences—as an observer for NOAA Fisheries.

“I watch what gets taken out of the ocean to ensure there’s more to get taken out later,” Carpenter says of his work. As one of about 850 observers contracted by NOAA Fisheries, Carpenter acts as the agency’s eyes and ears on the water. Observers collect data from commercial fishing vessels on what’s caught and what’s discarded, and track interactions with seabirds, sea turtles, and marine mammals. The data are critical “puzzle pieces of the whole picture,” as Carpenter says, underpinning the decisions made for sustainable fisheries management.

Read the full story from NOAA Fisheries

 

Legal challenges hanging over federal right whale protections

October 7, 2021 — Later this month, a stretch of federal waters off the coast of Maine will become temporarily off-limits for lobster fishing.

The seasonal closure is part of a new set of regulations aimed at protecting the endangered right whale population.

According to the National Oceanic and Atmospheric Administration, there are fewer than 370 right whales left in the world.

The marine mammals are native to Maine waters, traveling between coastal Nova Scotia and New England to feed and breed.

Research shows as many as four out of every five right whales show signs of injury from fishing line entanglement.

Along with the seasonal closure of some federal waters, the new regulations also limit the use of fixed-line lobster traps.

Read the full story at WABI

 

Study Shows Climate Change Could Be Altering the Marine Food Web

September 28, 2021 — Climate change is redistributing biodiversity globally, and distributional shifts of organisms often follow the speed and direction of environmental changes. Research by scientists at Stony Brook University’s School of Marine and Atmospheric Sciences (SoMAS) reveals that this phenomenon is affecting where large marine mammals are distributed relative to their prey species, which could have important implications for marine food web dynamics. Their findings are published in Scientific Reports.

Marine mammals (endotherms), such as whales and dolphins, are often assumed to shift their movements and distribution in response to warming waters more slowly than their ectothermic prey, such as fish and squid, whose growth and productivity is directly impacted by water temperature. Since marine mammals are large, highly mobile and occur across wide geographic ranges, distributional shifts in these species are difficult to quantify. In this study, data from fisheries bycatch and stranding events is used to examine changes in the distribution of long-finned pilot whales and their prey relative to climate velocity in a rapidly warming region of the Northwest Atlantic.

Read the full story from Stony Brook University

 

New Study Develops Alternate Methods to Manage Gray Seal Bycatch

September 27, 2021 — The following was released by the Science Center for Marine Fisheries:

Marine mammal conservation is one of the top goals of U.S. ocean management. That is why it’s particularly important for regulators to have an accurate estimate of how fisheries and other ocean users may impact marine mammal populations. A new study looks at ways of strengthening and fine-tuning existing marine mammal management and assessing the impacts on one marine mammal population in the western North Atlantic, the gray seal.

The study, from Drs. André Punt, John R. Brandon, Doug DeMaster, and Paula Moreno, is the culmination of a 3-year research project led by Dr. DeMaster and conducted in collaboration with the scientists at NOAA’s Northeast Science Center, with funding from the Science Center for Marine Fisheries. It specifically examines a key variable in marine mammal management, the Potential Biological Removal (PBR) level.

Under the Marine Mammal Protection Act, marine mammal populations are managed according to their Potential Biological Removal (PBR), which determines the level of mortality (and serious injury) that is sustainable for each marine mammal population. When bycatch of a marine mammal population nears or exceeds its PBR level, restrictions are often imposed on nearby fisheries as a precautionary measure to prevent the population from becoming depleted.

In the case of gray seals, assessments of human-caused mortality levels are complicated by the fact that the gray seal population exists on both sides of the U.S.-Canada border. Determining when the gray seal PBR is exceeded is subject to errors due to incomplete information, meaning that certain management decisions could unnecessarily trigger fishing restrictions (termed by scientists as ‘false positives’) or needed restrictions are not imposed (known as ‘false negatives’). These restrictions often include catch limits of commercially valuable species, limits on what kinds of gear can be used, and other regulations that can be costly for the fisheries forced to adopt them.

To address this, the authors assembled the best available data on the western North Atlantic grey seal population and Canadian fisheries. This allowed them to produce two key estimates when assessing whether gray seal bycatch exceeds the PBR level. It used a more realistic, species-specific rate of gray seal maximum net production (i.e., 14.1% per year), rather than using a generic default value for other seal species (12% per year). If adopted by the National Marine Fisheries Service (NMFS), this would increase gray seal PBR level by 18%. The study also used an extrapolated bycatch estimate for adjacent Canadian waters, which had not previously been attempted.

The study found that, in comparison to the base model currently used by NMFS, this approach is more robust to transboundary movements and uses a more accurate estimate of maximum net production of gray seals, allowing managers to adopt more appropriate management measures on fisheries while still achieving precautionary conservation goals for the grey seal population. The results can provide a blueprint for other assessments of marine mammal-fishery interactions for similar transboundary marine mammal stocks.

View the full study here