Saving Seafood

CALIFORNIA: California’s rarest salmon face a narrow window for survival

August 24, 2026 — For California’s most endangered salmon, the difference between surviving and dying may come down to just 15 days.

In a study published Friday in Science Advances, researchers say the chance of juveniles surviving fell by about 73% for every 1.8-degree Fahrenheit increase in average river temperature during those first 15 days.

Sacramento River winter-run Chinook have only one surviving population, with an average of a few thousand fish returning in recent decades.

Shasta Dam keeps the salmon from returning to their original cold-water habitat around Mount Shasta in Northern California. Instead, they spawn in the Sacramento River, where warmer summer water can threaten their developing eggs.

Cold water is released from Shasta Reservoir to keep the river cool enough for salmon eggs to survive, but that water is also needed by farms and cities.

The balance becomes harder in dry years, when there’s less water to go around.

Kohma Arai, who conducted the research as a postdoctoral scholar at UC Davis, said a full summer of spawning doesn’t necessarily mean a successful season.

Read the full article at Courthouse News Service

Lobsters and acidic seas: can shellfish help neutralise one of the greatest threats to the ocean?

August 21, 2026 — For many in the US region of New England, the lobster roll is synonymous with summertime. Loaded into a toasted bun, chunks of the sweet meat are served hot and soaked in butter, or chilled and slathered in mayonnaise with celery and herbs.

The only thing more debated than the recipe is the price: the once-humble roll now routinely fetches $30 (£22), or even $50, in a sign of the changing times – and seas.

A third-generation lobster fisherman, Scott Lord spends his days hauling traps on the Gulf of Maine, which is warming faster than 99% of the world’s oceans. “Whether you agree with who says why it’s happening, it is happening,” he says.

Bycatch that was once plentiful, such as sea urchins, sand dollars or starfish, are increasingly rare. And, most concerning, Lord has noticed the number of inshore lobsters dropping dramatically over the past 15 years, pushing fishers farther and farther offshore.

Motivated to find a remedy, Lord joined a regional shellfish committee. “Why are there not clams where there used to be clams? Why are they not coming back, no matter what we do?” he asks.

Hundreds of miles to the south in Massachusetts, on a sandy crook of land that spins out to form Cape Cod, Adam Subhas, a scientist at the Woods Hole Oceanographic Institution, is trying to find the answers.

Read the full article at The Guardian

Beyond Ocean Mapping: Using Uncrewed Vehicles to Advance Ocean Research

August 21, 2026 —  It’s January off of Nantucket Shoals. An uncrewed surface vehicle begins a series of carefully planned transects through Southern New England, collecting data day and night. There are no scientists onboard, but the 30-foot vessel is constantly measuring ocean currents, water temperature, salinity, weather and other ocean conditions. It’s also helping identify areas with high fish and plankton abundance. Every nautical mile traveled adds to a more complete picture of how marine ecosystems function.

These missions reflect NOAA’s growing use of uncrewed systems technology. Traditionally, these autonomous platforms have supported hydrographic surveys, nautical charting, and ocean mapping. But the benefits extend beyond creating better maps. Today, the same technologies are helping scientists answer complex ecological and oceanographic questions. They’re collecting critical, high-accuracy, and time-sensitive data across nearly every mission area.

“Over the last several years, we have been able to expand the applications for how uncrewed surface vehicles can help with various research related to stock, ecosystem, and protected species evaluations and assessments,” explains Dr. Conor McManus, marine development and advanced technology program lead for the Northeast Fisheries Science Center. “With each mission we conduct, we are learning more about the Northeast U.S. Shelf ecosystem, but also how we can better operationalize these technologies to meet our scientific or data needs.”

These technological advances are expanding where, when, and how our scientists collect ocean data. The results allow researchers to observe the ocean more continuously and in places that are difficult to sample with ships alone. These vehicles complement ship-based surveys—filling gaps in data that can arise from challenges like winter weather and limited ship availability.

This year, there were three uncrewed surface vehicle missions in the Northeast—two operated by Chance Maritime Technologies and one using DriX. They demonstrated how the benefits of uncrewed survey technology can answer many different scientific questions.

Read the full article at NOAA Fisheries

Study piloting use of black soldier flies to solve Florida’s sargassum issues

August 18, 2026 — A new study by the University of Miami is trying to determine whether black soldier fly larvae could be a scalable solution to the U.S. state of Florida’s sargassum problem.

Florida’s Atlantic coast is regularly hit by “sargassum inundation events,” which cover the shoreline in massive piles of the seaweed. Researchers have determined the problem has been beginning earlier in the year, and in 2026, South Florida’s shores have been hit with a record-breaking bloom, according to the study’s authors.

Read the full article at SeafoodSource

$15M grant aims to protect New England’s ‘legacy’ seafood industry

August 17, 2026 — This grant will fund new fishery technology and innovations, which will help researchers at URI and other partners better understand the changing sea environment.

The seafood industry has long been an economic driver in Rhode Island, but it’s facing a number of challenges — including rising costs, warming waters and an aging workforce. In an effort to combat these obstacles, the National Science Foundation has awarded a $15 million grant to the University of Rhode Island and several regional partners.

Morning host Luis Hernandez spoke with Marta Gomez-Chiarri, an aquaculture and fisheries professor at URI, about how her lab is hoping to use the money to spur technological innovations that can help strengthen the health and viability of the local seafood industry.

Read the full article at Ocean State Media

Guam fishers say shark deterrents fail as disaster aid remains out of reach

August 17, 2026 — Federal fisheries officials heard a familiar complaint from Guam fishers this month: Sharks are stealing their catch, the fixes on the market don’t work, and the island still has no clear path to federal disaster money when storms wipe out their gear.

The Western Pacific Regional Fishery Management Council and the Pacific Islands Fisheries Group hosted a community meeting last week at the Guam Museum Art Cafe, part of a series of gatherings the groups have held across the region to collect input on federal fisheries policy. The Council’s Guam Advisory Panel followed with its own meeting Aug. 8 at the Council office in Hagåtña, taking up commercial fishing rules inside the Marianas Trench Marine National Monument and 2026 strategic planning.

Last week’s gathering was one of close to 40 meetings the fisheries group has held across the Pacific over the past year and a half, part of an ongoing effort to document fisher concerns for the Council and its federal partners. Those observations feed into the Council’s annual Stock Assessment and Fishery Evaluation reports, which Jesse Rosario, the Council’s representative in Guam told The Guam Daily Post help shape recommendations on adapting fishery management to a changing climate. The Council is also building an online and mobile app that will let fishers report shifts in fish abundance, currents and weather directly, with a launch targeted for later this year.

Shark depredation, when sharks strip fish off the line before a catch reaches the boat, ranks among the most pressing issues raised by Guam’s small-boat fishers. According to Rosario, the Council held an international workshop on the problem in February that paired fishers with technology developers and scientists working on deterrent devices.

One Guam fisher put a magnetic deterrent that cost him nearly $70 to the test over two days on the water and came away unconvinced. He described attaching the device near the hook, expecting it to disrupt a shark’s electrical receptors before it reached the bait.

Read the full article at The Guam Daily Post

NOAA Scientists Discover Repeat Spawning in Pacific Capelin

August 12, 2026 — For certain fish species, like Pacific salmon, reproduction is a once-in-a-lifetime event, known as semelparity. Many other fish are iteroparous—meaning they can spawn repeatedly throughout their lives. New research by NOAA’s Alaska Fisheries Science Center reveals the first evidence that Pacific capelin can be repeat spawners.

Over the past decade, the North Pacific Ocean has faced extreme climate variability, including marine heatwaves that severely impacted capelin populations. Understanding capelin’s reproductive flexibility under these fluctuating conditions is crucial for predicting their annual reproductive potential and long-term resilience. Capelin abundance is also an important indicator of the marine ecosystem health.

Examining Reproductive Flexibility in Fluctuating Environments

Historically, the life history, ecology, behavior, and population dynamics of Pacific capelin have not been studied as well as their commercially important counterparts in the Atlantic. In North Pacific and Arctic ecosystems, Pacific capelin serve as a major forage fish and primary food source for Steller sea lions, humpback whales, and other marine mammals. They also are a key subsistence resource and an important food source for commercially important groundfish.

Capelin are short-lived—typically surviving only 1 to 4 years. Their abundance fluctuates wildly in changing environments, leading to multiyear population crashes during marine heatwaves. Recent research highlights that these heatwaves shrink capelin distribution and deplete their energy reserves. Ultimately, these combined stressors leave capelin highly vulnerable to mortality and put the predator populations that rely on them at risk of decline.

In this new experimental study of captive fish, NOAA scientists looked more closely at the spawning potential of Pacific capelin. They researched their life history and how they respond to shifting environments.

Read the full article at NOAA Fisheries

Survey Crashers: Encountering Unexpected New Faces in the Gulf of Maine

August 11, 2026 — The sun was out and the sea conditions were ideal. Fish were being hauled onboard at a consistent rate. I was sampling spiny dogfish on the back deck of the F/V Tenacious II when the captain stopped the hauler and said, “Hey, we caught something different.” I looked up at the hauling station and saw the captain unhooking a chain dogfish, a new species to the Gulf of Maine Bottom Longline Survey . The survey focuses on the rocky bottom habitat in the Gulf of Maine. Every year in the spring and the fall, we partner with two commercial fishing vessels to haul up 45,000 individual hooks from the rocky bottom of the Gulf of Maine from 45 randomly selected locations. We conduct the survey in parallel with the Northeast Bottom Trawl Survey , which samples in the Gulf of Maine during the same time each spring and fall.

Typically we see spiny dogfish, white hake, and haddock along with a variety of other commercially important species. Over the more than 10-year history of this survey, the species caught are typically similar each season. But, occasionally we encounter new species. This spring, during the first trip of the 2026 season, we were excited to encounter a new species.

New species added to our list: the Chain Dogfish

We were fishing in the southeastern corner of the Gulf of Maine on our first leg of the 2026 spring season, when we added the chain dogfish to our list of encountered species. This was the first chain dogfish ever seen in 12 years of the survey. Chain dogfish have a very charismatic pattern on their body, with intricate black lines that stand out sharply against the gray body resembling a tiger.

  • Species: Chain Dogfish (S cyliorhinus retifer )
  • Habitat: Demersal (near the sea floor)
  • Range: Western Atlantic (Massachusetts to Nicaragua)
    • Most abundant off the coast of Virginia and North Carolina in depths between 120 and 2,500 feet.
  • Size: 4 to 24 inches

Another Uncommon Species to the Gulf of Maine: Golden Tilefish

This survey encountered golden tilefish as well, which are also not typically found in the Gulf of Maine. This season, we were fortunate enough to encounter three individuals during the first leg of the spring survey. Like the chain dogfish, our survey typically encounters this species in the southeastern Gulf of Maine. Golden tilefish have a very distinctive coloration and pattern. Golden tilefish are vibrant deep-sea fish sometimes called “clowns of the sea”. They have bright iridescent blue-green backs, scattered spots of yellow and gold, and crisp white bellies. Their heads are rosy-pink and they feature a large, fleshy crest or flap on top. In addition to the vivid coloration, Golden tilefish are considered a delicacy by seafood lovers.

  • Species: Golden tilefish ( Lopholatilus chamaeleonticeps )
  • Habitat: Demersel along the ocean floor along the outer continental shelf and upper slopes
  • Range: Throughout the western Atlantic Ocean from Nova Scotia, Canada, south to northern South America, including the Caribbean and the Gulf of Mexico. In U.S. waters, they are most abundant from Nantucket Island, Massachusetts, down to Cape May, New Jersey, at depths between 250 and 1,500 feet.
  • Size: 10 to 45 inches

Days at sea can be long and the unfavorable weather conditions can make the work difficult, but getting the opportunity to work on a boat in the Gulf of Maine is one of my favorite aspects of this job. At the end of the last haul of this particular trip, after being on deck all day, the sun was beginning to set. The seas were calm and the sky was clear. The sunset over the horizon, turning the sea surface orange while I was finishing data collection and cleaning up the gear was a scene I will never forget.

Being an avid recreational fisherman myself, the ability to collect data that helps contribute information to improve stock assessments and understand fish stocks is very meaningful to me. I also enjoy seeing new and unusual species come aboard during the survey. As ocean conditions change, seeing new species reinforces how essential long-term data collection is to tracking and adapting to the changing Gulf of Maine.

ALASKA: Bill introduced by Alaska’s Murkowski aims to promote use of eDNA analysis in fishery management

August 10, 2026 — Federal fishery managers would start analyzing the DNA collected in ocean waters to help inform their decisions, under a bipartisan bill introduced in the U.S. Senate, Alaska’s Republican U.S. Sen. Lisa Murkowski said on Thursday.

Called the Fisheries Science Modernization Act, the bill would set up a system for the use of environmental DNA, known as eDNA, in fishery management. The bill would establish a National Oceanic and Atmospheric Administration pilot program using eDNA to assess fishery stocks, require NOAA to develop an agency-wide eDNA implementation plan and direct the agency to routinely collect eDNA samples and integrate that form of surveillance into its fisheries research and ecosystem monitoring.

Along with Murkowski, Sen. Sheldon Whitehouse, D-Rhode Island, is a prime sponsor of the measure. Cosponsors are Sens. Dan Sullivan, R-Alaska; Jeff Merkley. D-Oregon; Chris Van Hollen, D-Maryland; Patty Murray, D-Washington; Angus King, I-Maine; and Adam Schiff, D-California.

Read the full article at KTOO

 

New tool could predict ocean acidity in Bering Sea

August 10, 2026 — Crab populations in the Bering Sea are struggling. And researchers say climate change is a big cause. A new tool described in a study published Aug. 3 in the Journal of Geophysical Research Oceans will help researchers predict one of climate change’s biggest threats to crabs: ocean acidity. The study’s authors hope their work can help crabbers and fishery managers.

“I’m excited with this new model and study,” said Jamie Goen, the executive director of the nonprofit trade association Alaska Bering Sea Crabbers. “It will help us better understand what could be happening and how that might impact fisheries.”

Darren Pilcher, the study’s lead author and an oceanographer at the University of Washington, said he started the study because of requests from fisheries stakeholders.

The ocean absorbs a quarter of our carbon emissions, which make the water more acidic when the two mix. Acidic conditions are harmful for many different animals. This is especially true for shellfish, like crabs.

“They can eat more, and that helps a little bit, only to a certain point,” Pilcher said. “In fact, in some of the previous experiments with red king crab, if you lower the pH to a value of 7.5, the crab just die.”

Scientists have pointed to factors from climate change, like ocean acidification, as the reason the number of Bristol Bay red king crabs has plummeted in recent years. Goen said that other species, like snow crab, have also tanked.

Read the full article at KMXT