Saving Seafood

Bipartisan fisheries management law would expand eDNA use

September 1, 2026 — Bipartisan legislation introduced this month by the co-chairs of the U.S. Senate Oceans Caucus relies on environmental DNA (eDNA) techniques pioneered by Cornell researcher David Lodge, professor of ecology and evolutionary biology and past director of the Cornell Atkinson Center for Sustainability.

The Fisheries Science Modernization Act would direct the National Oceanic and Atmospheric Administration (NOAA) to incorporate eDNA tools into their assessment surveys of fish stocks – assessments that inform how many fish can be harvested by commercial and recreational fishers. Eight Republican, Democratic and independent senators co-sponsor the legislation, and multiple fishing industry and environmental protection organizations support it.

“When I started testing eDNA 17 years ago, I was interested in detecting rare species, such as emerging invasive species and endangered species,” Lodge said. “The focus of this legislation is quite different. Here, it’s not just about detecting whether a Pacific hake exists, it’s about estimating how many hake there are, based on how many distinct pieces of hake DNA you can find. It’s pretty astonishing to me that we in the scientific world working on eDNA have come this far, this fast.”

Read the full article at the Cornell Chronicle 

Invasive green crabs are bad for the environment so New Englanders are starting to eat more of them

August 26, 2026 — As a morning fog lifted over Maine’s York River, Mike Masi and his two interns stood on a dock sorting through a mound of one of the region’s most despised crabs and hoped to find a few that would end up on a gastronome’s plate somewhere in New England.

The trick is to identify invasive European green crabs that are about to shed their hard shell, or molt, revealing a softer exterior that has the feel of a leather couch, and are popular at restaurants. Not only do these green crabs fetch more money — Masi can get $3 a crab at market compared to as little as 8 cents for a hard shell — but catching them provides a service of sorts to the ocean’s ecosystem.

“Just about everyone hates them and we’re trying to turn them into a premium seafood product,” said Masi, whose company, shell+claw, is the only one that commercially cultivates these crabs.

Masi, a 45-year-old former marine science teacher, is part of a growing movement across New England aiming to lessen the crabs’ destructive impact by developing new markets. Others are putting green crabs in pet treats, fish sauce and even a line of green crab whiskey in New Hampshire.

The green crabs, Carcinus maenas, made their way from Europe to the East Coast in the ballast waters of ships hundreds of years ago. Numbering in the tens of millions, they outcompete Atlantic rock crab and juvenile lobster, destroy eelgrass beds and undermine salt marsh banks. They also are costing the region’s shellfish industry tens of millions of dollars each year, as they eat mussels, oysters and soft-shell clams.

Read the full article at ABC News

ALASKA: State denies Ketchikan tribe’s request to open green crab fishery

August 4, 2026 —  The Ketchikan Indian Community submitted an emergency petition to the state’s Board of Fisheries in March, asking to reclassify European green crabs from a Class A to a Class B banned invasive species.

This change would allow anybody to transport dead European green crabs for harvest or consumption. Currently, the invasive can only be possessed or transported for scientific or educational purposes by those with an Aquatic Resource Permit.

“This isn’t an issue that’s going anywhere, and it seems to be largely ignored throughout much of the state,” said Emily Halsell, a fisheries and wildlife biologist with the Ketchikan Indian Community.

Halsell is leading a green crab monitoring and removal program, which officially kicked off last fall. The tribe has removed about 1,500 green crabs from Ketchikan beaches so far this year.

In its petition to the state, the tribe cites the species’ damaging impacts to the local ecosystem and economy. The adaptive critter can burrow and destroy eelgrass beds, which are nurseries for native species like Dungeness crabs and juvenile salmon. They can also compete with native crab species for the same resources.

Read the full article at Alaska Public Media

MARYLAND: Maryland lawmakers vote to expand blue catfish pilot program

April 29, 2026 — Lawmakers in the U.S. state of Maryland have voted to pass legislation expanding its blue catfish pilot program, which was instituted to help remove more of the invasive fish from the state’s waterways.

Introduced recreationally in the 1960s, voracious blue catfish have since spread throughout Maryland, outcompeting native species and harming local ecosystems. State governments in both Maryland and neighboring Virginia have tried to encourage their removal from waterways by offering financial incentives for those who catch them and supporting local processors.

Read the full article at SeafoodSource

USDA announces USD 6 million to increase catfish production around Chesapeake Bay

August 8, 2025 — The U.S. Department of Agriculture has announced USD 6 million (EUR 5.2 million) in grant funding to increase catfish processing in the Chesapeake Bay region as part of an ongoing state and federal effort to manage the invasive species.

First introduced as a recreational fish in the 1960s, blue catfish quickly spread throughout the Chesapeake Bay watershed, predating on and taking resources from native species and upsetting local ecosystems. State and federal governments, as well as local nonprofit organizations, have worked to remove catfish from the waters, incentivizing fishers to land more of the invasive species, encouraging consumers to eat more, and finding new applications for the fish.

Read the full article at SeafoodSource

US Customs and Border Protection seizes 3,400 pounds of invasive mitten crabs

January 27, 2020 — U.S. Customs and Border Protection has seized 3,700 live mitten crabs – sent under false manifests – shipped from China and Hong Kong to individuals and businesses in the United States over the past four months.

The crabs were sent in 51 separate shipments through the port of Cincinnati, Ohio, U.S.A., and weighed in at around 3,400 pounds, according to a CBP press release. Mitten crab is considered to be an invasive species that can have a “disastrous impact on native habitats,” according to CBP.

Read the full story at Seafood Source

US refuses entry of invasive Chinese crab

November 2, 2018 — The United States government refused entry of hundreds of pounds of invasive Chinese mitten crabs in Cincinnati, Ohio, U.S.A., earlier this month.

While conducting a routine inspection of incoming Chinese freight at a local express consignment facility, U.S. Customs and Border Protection (CBP) agricultural specialists noted x-ray anomalies in 16 shipments, which were labeled as clothing.

They discovered thousands of live Chinese mitten crabs, destined for residences in New York.

Read the full article at Seafood Source

Climate change draws invasive species to the Arctic

February 27, 2018 — The Arctic is changing. Temperatures are increasing twice as fast as the global average and sea ice is retreating quicker than predicted.

It is now just a question of time before the Arctic becomes ice free in summer.

But while we humans react slowly to the problem at hand, evidence suggests that animals are on the move- on land, sea, and in the air. And in the cold Arctic, invasive species are drawn to regions where they could not previously have survived.

But invasive species pose a big problem for native animals, whose numbers can decline to the point of collapse. They also pose a threat to fisheries, with economic consequences on both a local and global scale.

In fact, our recent study showed that blue mussels have become much more common in the Arctic in recent years, just like other exotic species of bluefin tuna and killer whales.

Read the full story at Phys.org

 

Marine debris threatens Hawaii’s ecosystem, but collecting it can get complicated

February 15, 2018 — Marine debris continues to litter our beaches, and more of it is on the way if our current weather patterns continue.

Nets, floaters, and other rubbish aren’t just ugly and dangerous to marine life.

They hide small organisms and creatures that could harm our fragile shorelines.

Scott Godwin works with the Hawaii Department of Land and National Resources Division of Aquatics Resources Aquatic Invasive Species (AIS) team. He’s been studying invasive species and marine debris for more than 15 years.

“There’s a lot of stuff out there all the time,” Godwin said, “and Hawaii seems to be in the right place to get that stuff just because of the oceanographic conditions.”

He explained that the current winds and currents have simply been washing debris onshore that would normally otherwise float by the islands and go unnoticed.

The debris poses many dangers. Marine mammals and fish get tangled in floating masses of nets and die.

Read and watch the full story at KHON2

 

Japanese Animals Are Still Washing Up in America After The 2011 Tsunami

Plastics and metals have made it much easier for invasive species to raft across oceans.

September 29, 2017 — On March 11, 2011, an unprecedentedly powerful earthquake struck the Tōhoku region of Japan. It destroyed hundreds of thousands of buildings, wrecked the Fukushima Daiichi nuclear plant, created a tsunami that reached 40 meters in height, and shifted the entire planet a few inches on its axis. But among these catastrophic consequences, there were also subtler ones. For example, the tsunami inundated a small blue-and-white fishing boat called the Sai-shou-maru, ripping it from its moorings and casting it out to sea.

The boat drifted eastward through the Pacific, never capsizing. Then, on March 22, 2013, a couple weeks after the two-year anniversary of the quake, it washed ashore on Long Beach, Washington. Its hull was encrusted with seaweed and barnacles, and one of its compartments was full of water. And living in that water were five striped beakfish. The fish were youngsters, just four inches long. They had probably been swept into the boat as larvae, and spent their entire lives growing up within this ersatz aquarium. For two years, the boat was their entire world.

Four of those fish were euthanized by the Washington Department of Fish and Wildlife, but the fifth—now known as the “tsunami fish” was relocated to Oregon’s Seaside Aquarium. Its story astonished John Chapman, an ecologist at Oregon State University who studies aquatic invasive species. Somehow, this coastal species had endured a two-year, 4,000-mile voyage across the open ocean, in the tiniest of living spaces. “We said this couldn’t happen,” Chapman told OregonLive. “And nature is like: Oh yes it can.”

Of late, nature has been saying that to Chapman a lot.

In the last five years, he and his colleagues have documented 634 pieces of debris that were swept away by the Tōhoku tsunami and eventually washed up on the coasts of North America. And it hasn’t stopped coming yet. Between them, these bits of ocean-hopping junk carried 289 species that are typically found along Japanese coasts—a vast horde of sponges, sea stars, sea anemones, mussels, limpets, barnacles, and fish.

Read the full story at The Atlantic