Saving Seafood

Tropical fish off the Massachusetts coast? Warming ocean temperatures changing the catch.

November 5, 2026 — When you think of tropical fish, Massachusetts probably isn’t the first place that comes to mind. But fishermen are finding some unexpected species in New England waters, and warming ocean temperatures may be playing a role.

Max Harvey has spent decades on the water, and he’s noticed some unusual catches.

“There was a cubera snapper caught on Nantucket like last week. And it’s happened before, but it’s very uncommon,” Harvey said.

The cubera snapper is typically associated with warmer waters farther south. But it’s not the only surprising fish to turn up off the Massachusetts coast.

“Four or five years ago there was a rush of king mackerel in Vineyard Sound. And you could go out and actually realistically catch one,” Harvey said.

Warm water species have occasionally made their way into New England waters for decades. Harvey says the Gulf Stream, which carries warm water north along the East Coast, has been getting closer to shore, allowing pockets of warmer water to break off and bring different species into the region.

Read the full article at CBS News

Advancing Active Acoustics: How Scientists Use Sound to Monitor a Three-Dimensional Ocean

November 3, 2026 — The ocean is a three-dimensional world. Life moves vertically and horizontally through the water, often across large areas and at depths scientists cannot easily observe. Active acoustic technology gives researchers a tool to sample what’s hidden under the surface, gathering information that nets and other sampling gear cannot capture.

The use of sound to study the ocean is not new. After the Titanic sank in 1912, scientists and engineers began developing ways to use sound to detect shipwrecks and other objects beneath the surface. Fishermen soon found another use: Early underwater sounders could reveal where fish were. By the 1920s and 1930s, fishermen in Europe were using sounders to direct their fishing efforts.

What began as a practical fishing tool is now an important part of fisheries science. Today, our researchers use active acoustics to survey large areas of the ocean and study the distribution of fish and other organisms. The technology extends the reach of fisheries surveys and complements other forms of data collection, such as biological sampling. The resulting insights provide fisheries managers with the information needed to sustainably manage fish populations that support our nation’s seafood industries and the coastal economies that depend on them.

Dr. Michael Jech, a research fishery biologist at the Northeast Fisheries Science Center, has spent nearly three decades advancing the use of underwater acoustics. Since joining the center’s emerging acoustic program in 1998, his contributions to the field have helped refine techniques and expand their applications in fisheries research. “The trick is in the interpretation of the electronic signals,” Dr. Jech explains. “That challenge has shaped much of my career.”

Dr. Jech’s work helped launch acoustics from a specialized technology toward a broader tool for observing fish, plankton, and marine ecosystems. As the former chair of the international Working Group on Fisheries Acoustics, Science, and Technology, his work continues to connect Northeast fisheries research with the international acoustics community. For more than 50 years, the working group has brought together fisheries and plankton acoustics researchers from across the globe to advance methods, technology, and applications for active acoustic technology. Their most recent meeting convened researchers from 26 countries representing all inhabited continents.

Read the full article at NOAA Fisheries

MAINE: Maine plans survey around offshore wind sites

October 30, 2026 — The Maine Department of Marine Resources (DMR) is planning a winter bottom trawl survey around the state’s long-planned offshore wind energy research project, aiming to understand how floating wind turbines may affect the ocean ecosystem and commercial fishing.

After major offshore wind proposals succumbed to opposition from the Trump administration, the modest Maine Research Array Wind Energy Area – a lease area of almost 15,000 acres in the Gulf of Maine – remains in limbo, since a potential developer bowed out in March 2026 over that uncertainty about federal policy.

Maine researchers are still working to build a knowledge base around future wind power and fisheries.

The 55-foot dragger Northern Lights is scheduled to set out from Portland to work from around Jan. 11 through Feb. 28, with 37 sampling tows over nine days. The time frame is weather-dependent and could extend into March, according to an agency statement.

The sampling will help researchers examining fish and invertebrate populations “to establish baseline data that they will then compare with findings collected during the construction and operation” of a floating turbine array, according to the DMR.

Read the full article at the National Fisherman

ALASKA: ‘Sloppy is the way I would describe this approach’: Unknown plans for an underwater data center in Cook Inlet

October 29, 2026 — A new player in Alaska, DeepGreen Cook Inlet SPV, has proposed a first in the state: an underwater data center.

It seems to have come as a surprise to some and has sparked major concerns about a lack of regulations for data centers by the state and possible environmental impacts, such as to the endangered Cook Inlet Beluga.

“Sloppy is the way I would describe this approach at this stage in the game,” Mayor Peter Micciche of Kenai Peninsula Borough said.

He says he hasn’t gotten an email, letter or a phone call from DeepGreen.

Read the full article at KTUU

Underwater data centers may be coming to the U.S.—smack in the middle of endangered whale habitat

October 27, 2026 — The battle over where to put data centers is heading below the waves: the Trump administration is considering proposals to build two massive underwater data centers off the country’s coast. The sites selected for the projects—one in Cook Inlet, Alaska, and one in the Gulf of Maine—are smack in the middle of two endangered whale populations’ habitats.

Whales are “skittish animals,” says Arial Brewer, a beluga researcher at the University of Washington and the National Oceanic and Atmospheric Administration. “A massive-scale project like this could really stress them out in a lot of different ways.”

Data centers, with their thousands of servers, generate considerable heat that can damage equipment if not offset in some way. Land-based facilities use massive amounts of fresh water to cool down. By putting a data center underwater, the ocean can easily dispel that heat. “Cooling is a large part of what a data center costs to run, and seawater is a free sink,” says Vishal Misra, a computer scientist and professor at Columbia University.

Read the full article at the Scientific American

Deepwater species in the Gulf of Mexico declined drastically after Deepwater Horizon oil spill

October 23, 2026 — Deepwater fish, shellfish, and squid populations in the Gulf of Mexico dropped significantly following the 2010 Deepwater Horizon oil spill and have yet to recover 16 years later, according to a new study.

“Our findings are particularly concerning because these are species that are abundant, widespread, and historically might not have been considered vulnerable,” Florida International University (FIU) marine researcher Pedro Peres said in a release. “What we are seeing suggests that even species that appear abundant can experience substantial changes that may go unnoticed without monitoring.”

Read the full article at SeafoodSource

Decade of Data Shows Rapid Decline in Pelagic Fish and Invertebrates in Deep Gulf

October 21, 2026 — Following the Deepwater Horizon oil spill, scientists across the region jumped into action to monitor its impacts. One particular effort focused on pelagic nekton—the small critters like fish, shrimp, and cephalopods that swim freely in the ocean and serve as the base of pelagic food webs. The Deep-Pelagic Nekton Dynamics of the Gulf (DEEPEND) Consortium led this project to quantify long-term trends in the offshore fauna of the Gulf. While observed declines in these critical prey groups can’t be tied directly to the spill, scientists have not identified another likely explanation.

Tracking the Shift: A Decade of Deepwater Science

The first pelagic nekton sampling effort took place as soon as possible following the spill, with sampling occurring almost continuously for 9 months in 2011. These data represent the benchmark of pelagic nekton to which past and future numbers can be compared. The numbers were also similar to data collected during the 1980s and 1990s.

The next sampling involved six efforts across four consecutive years (2015–2018), followed by three more in 2021–2023. Overall, these efforts comprise more than a decade of abundance and composition data for pelagic nekton in the Gulf of America.

During each of these events, the project team sampled discrete depths from 0 to 1,500 meters in the Gulf using a 10-square-meter Multiple Opening/Closing Net and Environmental Sensing System, or MOCNESS, with 3 millimeter mesh. Once net tows were complete, the science teams identified and counted each of the animals collected in each sample.

In addition to traditional net-sampling methods, the team also used echosounders to measure acoustic backscatter in the water column during the day and at night. This allowed them to independently estimate relative abundance of animals in fine spatial detail. Scientists also collected tissue samples from three dominant lanternfish species to monitor changes in genetic diversity.

Read the full article at NOAA Fisheries

Marine debris team completes latest Papahanaumokuakea cleanup mission

September 1, 2026 — A marine debris cleanup crew has returned to Honolulu after another mission to protect the fragile ecosystems of Papahanaumokuakea.

The Papahanaumokuakea Marine Debris Project completed its second mission of 2026 on Friday after a 21-day expedition to the Northwestern Hawaiian Islands.

The team removed 48,680 pounds of ghost nets and other plastic marine debris from Lalo, Kamokuokamohoaliʻi, Kamole and Kapou.

The mission was temporarily paused Aug. 19 as Hurricane Lala moved through the region.

Read the full article at Hawaii News Now

Climate change may halve omega‑3 fatty acids in fish and the organisms they eat

August 31, 2026 — You’ve probably heard eating fish and other seafood is good for your health. One of the main reasons is that seafood is an excellent source of two important omega-3 fats called EPA and DHA.

EPA and DHA are critical for the development and function of brains, eyes and healthy hearts. They also reduce chronic inflammation, which is linked to many chronic diseases. They can also reduce the risk of premature births and perhaps even some types of cancer.

While humans can produce EPA and DHA from ALA (an omega-3 fat found in plants) and it’s possible to get them from foods such as linseed and walnuts, seafood is the main source for most people.

However, our new study shows many fish and other seafood will become less rich in omega-3s over time, due to rising ocean temperatures as the climate changes. In fact, we found omega-3 could drop by 50% under very high warming scenarios.

This is very bad news for human health but also for the health of other animals in the food web.

Read the full article at The Conversation 

El Niño is disrupting the Pacific’s marine food web from the bottom up

August 27, 2026 — As the 2026 El Niño strengthens in the equatorial Pacific, satellites are capturing the first major signs of disruption to the marine food web.

According to by NASA’s Earth Observatory observations, satellite measurements show a substantial drop in surface concentrations of chlorophyll across the Central Pacific compared with neutral conditions in June 2025. Chlorophyll is the pigment that helps plants absorbs sunlight to generate energy, and its reduction indicates a decline in phytoplankton, the base of the ocean’s food webs.

Hyung-Gyu Lim, an associate professor of oceanography at Chonnam National University in South Korea, told Mongabay by email that a developing El Niño can slow the process of upwelling, where nutrient-rich cold waters rise from the ocean depths to the surface. “This may trigger less nutrient supply. It is not surprising for me,” Lim said.

Read the full article at Mongabay