Sargasso Sea Archives - Saving Seafood

Out of 2,600 applicants, 13 Mainers get licenses for elver harvesting this season

March 8, 2022 — Spring’s arrival will mean the reappearance of tiny baby eels in Maine’s estuaries — and of intrepid fishermen up before dawn hoping to net allowable quotas for excellent prices.

The baby eels are called “elvers” and they’ve been drifting northward since late winter from the Sargasso Sea, a region of the western Atlantic Ocean, south of Bermuda, where they were born. Their mission is to make it safely to inland waters and grow into adult eels.

At noon on March 22, a short harvest season will open that allows 425 Maine-based fishermen to net small amounts of elvers, most of which will be sold to Far East markets, where elvers are cultured and reared to adult size for the food fish market.

With elvers selling for $1,800 per pound in 2021, licenses are highly coveted, and fishermen hang onto them.

That’s why, when the Maine Department of Marine Resources opened a lottery for 13 licenses that became earlier this year, there were over 2,600 applicants.

Read the full story at Mainebiz

Millions of baby eels are caught in Maine each year, but the fish remains an enigma

March 15, 2021 — Each spring, when great masses of baby eels swim from the sea up rivers and streams in Maine toward freshwater, roughly 24 million of the small, clear and spaghetti-like creatures are caught in nets, sold and shipped off to supply the world seafood market, mainly as unagi on sushi menus.

Beyond that, not much is known about American eels in Maine or elsewhere along western shores of the Atlantic Ocean, except that Maine’s annual springtime baby eel fishery is collectively worth about $17 million to the hundreds of Mainers who catch them.

Eels — which spawn at sea each spring before swimming into freshwater watersheds where they live for years before swimming back out to sea to reproduce and die — are considered one of the world’s most enigmatic fish.

The smallest larval eels scientists can find are in the Sargasso Sea, out in the middle of the North Atlantic Ocean, but no one has ever seen adult eels reproducing. Nor has anyone ever been able to get eels to reproduce in captivity. Sigmund Freud, before he became known as the founder of modern psychoanalysis, once famously spent a summer as a student dissecting eels in Trieste, Italy, searching for their reproductive organs — before it was determined that eels don’t develop these organs until late in life, not long before they return to sea to procreate.

Read the full story at the Bangor Daily News

Why Maine Is The Only State In The US With A ‘Significant’ Elver Fishery

May 1, 2018 — If you’ve ever read a story in the news about elver fishing season, you’ve probably seen some variation of this line: “Maine’s the only state in the U.S. with a significant fishery for elvers.”

Maybe you thought that’s because elvers don’t exist in large numbers outside of Maine — that would be a reasonable assumption. But the real reason is somewhat more complicated.

Let’s start at the beginning, in the Sargasso Sea. Although it sounds romantic, the Sargasso Sea is actually just an area of the North Atlantic that’s full of Sargassum, a kind of seaweed that floats in the ocean rather than existing close to land.

It’s a unique marine environment, and the Sargasso Sea provides a cozy place for many species to spawn or start out life, including baby turtles and some types of fish.

It’s also where the life cycle of the American eel both begins and ends. They’re born there, and after a few decades — eels are incredibly long-lived animals — they swim back in, spawn and die.

Outside of that, eels’ life cycle isn’t that well understood, but we know they start out there as tiny leptocephali, or larvae, which look like nothing more than a transparent willow leaf.

Read the full story at Maine Public

American eel migration

August 30, 2017 — Eels are now descending out of the rivers all along the Gulf of Maine and every large prey fish in the ocean is waiting for them like kids looking for the ice cream truck. For the next few weeks fishermen will find that using eels for bait will be the key to landing those 50-inch stripers that are fueling up for their run south in October and November.

The American eel (Anguilla rostrata) is still a bit of a mystery among those that have spent a life time studying their life cycle. They are one of the few life forms that migrate from fresh water to the ocean to spawn in a process described as catadromous. They are also facultative which means they can live in a variety of environments such as fresh water rivers and lakes or salty oceans.

Although Aristotle thought they were created in the mud of streams and Pliny the Elder believed that they were formed from scales scraped off on rocks, it was not until 1922 that Danish biologist Johannes Schmidt discovered that eels spawned in the Sargasso Sea. He confirmed his discovery in a two year ocean voyage between 1928-30. What is one of the weird facts of science is that while we know they spawn in the Sargasso Sea because the eggs and young have been observed there, no adult eel has ever been found in the area.

Read the full story at the Gloucester Times

Eel migration study tells ‘romantic’ tale

October 6, 2016 — Scientists are a step closer to solving the mystery of one of the great animal migrations.

Each autumn, eels leave European rivers to travel across the Atlantic Ocean to breed for a single time, then die.

Tagging studies show that the fish swim more than 3,000 miles (4,800 km) to the Sargasso Sea.

But, rather than one mass spawning in the spring – an idea held for a century – their arrival is staggered, UK researchers say.

“Eel migration is a rather romantic tale,” said lead researcher David Righton, head of the Centre for Environment, Fisheries and Aquaculture Science (CEFAS) in Lowestoft.

“Eels only spawn once in their lifetime and then they die, so they’re making this final journey of their life, towards the Sargasso Sea, to meet their life’s goals, if you like.

“And so the fact that we’ve got a little bit of insight into that – but we’ve also got some new questions about how eels tackle that really fundamental problem of meeting that life goal – is really, really fascinating.”

Read the full story at the BBC

MAINE: Elver season opens with new laws in place

March 24, 2016 — ELLSWORTH, Maine — Maine’s elver fishing season opened at just after midnight on Tuesday morning chilled by the first spring snowfall and the prospect of a weak market.

Many of Maine’s ponds and rivers are ice-free after an exceptionally mild winter and some harvesters had reported seeing elvers — more properly glass eels — moving into fresh water after their long ocean journey from the Sargasso Sea, where the juvenile eels hatched. Until Monday, harvesters had been anticipating an early start to the fishing season.

“There’s been a few eels in the brooks,” Franklin elver harvester Darrell Young said Monday afternoon as he scouted the shore of Hog Bay for a spot to set his fyke net once the season opened at midnight. “Some brooks are as warm or warmer than the ocean. The snow will cool things off. Things will slow down until it warms up.”

Young is one of the founders of the Maine Elver Fishermen Association and one of the leaders in the state’s battles with federal regulators to control the fishery.

While the water will almost certainly grow warmer, longtime elver buyer Bill Sheldon said that the situation in the principal markets for Maine elvers is likely to cast a chill over the price fishermen are paid for their catch.

“The Chinese and Asian economies in general are terrible,” Sheldon said Tuesday morning as he prepared to welcome the harvesters he expected to bring him their first elver landings late that night. “It’s going to reflect on the market for sure, and on the price we’re going to get for our eels.”

Maine elvers, just a tiny segment of the world market, are shipped primarily to farms in China and Taiwan, where they grow for about a year before they are processed into kabayki. Popular throughout much of Asia, the eels are gutted, boned and butterflied, then cut into square fillets that are skewered, dipped in seasoned soy sauce and broiled.

According to Sheldon, the poor economy has cut demand for kabayaki and, consequently, for elvers. Farmers who bought elvers last year are having trouble selling the mature eels they’ve raised.

“Everyone’s cutting back and it’s showing up right now,” he said.

That could be bad news for Maine elver harvesters.

Read the full story at The Ellsworth American

Closing In on Where Eels Go to Connect

December 7, 2015 — Eels hold tight to their biological secrets, so much so that Aristotle mused that they must be sexless creatures spontaneously emerging from the “earth’s guts.” Now, at least one eel enigma is finally a step closer to being solved.

For the first time, scientists have tracked American eels migrating to their legendary spawning grounds in the Atlantic Ocean.

“For a very long time, circumstantial evidence has pointed to the Sargasso Sea as the breeding grounds of eels, but like crime novel detectives, scientists have wanted conclusive proof,” said David Cairns, a research scientist at Canada’s Department of Fisheries and Oceans, who was not involved in the work.

The search for that proof, he added, “has preoccupied eel scientists for more than a century.”

American eels spend their adult lives, which range from three to 20 years, in rivers and estuaries from Greenland to Venezuela, but those far-flung populations share a single reproductive site in the Sargasso Sea. Their migration to the sea is perhaps one of the most impressive animal journeys in the world, but no one has ever caught an adult in the open ocean — much less observed them reproducing.

Read the full story at the New York Times

Canadian eel tracked on 2,400-kilometre migration to Sargasso Sea

October 27, 2015 — It’s a mystery that has puzzled scientists for a century — how swarms of baby eels appear in the Sargasso Sea near Bermuda when adults have only been found in faraway places like Canada’s St. Lawrence River.

For the first time, Canadian researchers have tracked an adult female eel from Nova Scotia all the way to the northern edge of the Sargasso Sea with a satellite tracker — a 45-day journey of about 2,400 kilometres, described in a new paper published today in Nature Communications.

If they can confirm the path taken by that eel is the typical migration route used by Canadian eels, that may help scientists figure out measures that could be taken to conserve the endangered fish.

American eels, known by the scientific name Anguilla rostrata, are found in watersheds from Venezuela in the south to Greenland in the north, says Julian Dodson, a University of Laval researcher who co-authored the new paper.

In Canada, they historically lived throughout the St. Lawrence Seaway and Great Lakes, although their populations have fallen dramatically in the past 20 years, largely because of fishing and hydroelectric dams that they have trouble crossing.

Males typically live further south than females.

Read the full story at CBC News

American Eel Population Remains Stable, Does not Need ESA Protection: Conservation efforts should continue for long-term species health

October 7, 2015 — The following was released by the Atlantic States Marine Fisheries Commission:

“The Atlantic States Marine Fisheries Commission is encouraged by the U.S. Fish and Wildlife Service’s decision to not list American eel under the Endangered Species Act,” states Commission Chair Dr. Louis B. Daniel, III. “The Commission, its member states, and federal partners have invested significant resources over the past several years to conduct the first coastwide benchmark stock assessment for American eel. The assessment findings, which were fully endorsed by an independent panel of fisheries scientists, have formed the basis of our current management for American eel. This management program seeks to reduce mortality and increase conservation of American eel stocks across all life stages. However, given the current depleted status of the resource, there is still considerable work to be done to rebuild American eel. The Commission will continue to closely monitor American eel fisheries and the status of the resource, and make adjustments to the management program as necessary, to ensure stock rebuilding.”

See below for more information on the U.S. Fish and Wildlife’s finding.

The U.S. Fish and Wildlife Service announced today that the American eel is stable and does not need protection under the Endangered Species Act (ESA). Nonetheless, for the species’ long-term stability, the agency recommends continuing efforts to maintain healthy habitats, monitor harvest levels, and improve river passage for migrating eels.

The life of the American eel begins and ends in the Sargasso Sea in the North Atlantic Ocean. Millions of adult American eels leave waters from as far north as Greenland and south to Venezuela to reproduce in the Sargasso Sea. Hundreds of millions of American eel larvae return from the sea to freshwater, estuarine and marine waters. Their random mating behavior makes eels panmictic, meaning the species is composed of one population worldwide. They are a culturally and biologically important part of the aquatic ecosystems in the Western Hemisphere. American eels have been harvested for thousands of years by Native American cultures, and were an important part of the diet of early colonial settlers.

Today’s decision, also known as a 12-month finding, follows an in-depth status review on a 2010 petition to list the eel as threatened under the ESA. The review was largely based on a biological species report peer-reviewed by the National Oceanic and Atmospheric Administration-Fisheries, U.S. Geological Survey, U.S. Forest Service, the Atlantic States Marine Fisheries Commission’s Eel Technical Committee and academia. After examining the best scientific and commercial information available regarding past, present and future stressors facing the species, the Service determined the eel’s single population is overall stable and not in danger of extinction (endangered) or likely to become endangered within the foreseeable future (threatened).

While American eels still face local mortality from harvest and hydroelectric facilities, this is not threatening the overall species. Harvest quotas and mechanisms restoring eel passage around dams and other obstructions have also reduced these effects. Dam removals, culvert replacements, night-time hydroelectric facility shutdowns, and updated passage structures have restored habitat access in many areas. The Service is working with partners across the range on conservation efforts to ensure long-term stability for the American eel and other migratory fish species. The agency’s Northeast fisheries program alone has removed or improved more than 200 barriers to fish passage since 2009, opening more than 1,200 miles and 12,000 acres of rivers for aquatic wildlife including the American eel. The Service has also secured $10.4 million in Hurricane Sandy resilience funding to restore fish passage through removal of 13 dams in Connecticut, Maryland, New Jersey and Rhode Island.

American eels remain widely distributed throughout much of their historical range, despite habitat loss and reduced numbers over the past century. New information reiterates their flexibility and adaptability by indicating that some eels complete their life cycle in estuarine and marine waters, contrary to former research that suggested eels required freshwater for growing to adulthood.

This is the second time the Service has evaluated the American eel for listing under the ESA and found listing not warranted. The first decision came in 2007 after an extensive status review. This 12-month finding will be published in the Federal Register on October 8, 2015. The finding and supporting documents can be found at http://www.fws.gov/northeast/americaneel/.

More information is available on the American eel website.