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The LEO Network is a worldwide network of observers and experts that share their observations of environmental change.
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Observations

Seven salmon confirmed as farmed escapees
Icelandic authorities report that 7 of 22 salmon submitted for testing were confirmed as farmed escapees, caught in several North/West Iceland rivers. Tracing suggests six fish share a common origin in Dýrafjörður; investigations continue and anglers are asked to turn in suspect fish whole for analysis.
Búðardalur, Western Region, Iceland
mbl.is

Low water impacting salmon run
The Chinook salmon run in the Napanee River is being impacted by unusually low water levels.
Napanee, Ontario, Canada

Low Water Levels in the Mackenzie River
Unusually low waters in the Mackenzie River during late summer 2025, disrupting traditional and commercial river transport and indicating a shift from riverbed to riparian areas.
Norman Wells, Northwest Territories, Canada

Counted a hundred farmed salmon in the lower part of Haukadalsá
An inspector from the Icelandic Fisheries Agency counted around 100 farmed salmon in the lower section of Haukadalsá, marking the largest occurrence of escaped farmed salmon in an Icelandic river, and plans are underway for removal operations including using anglers and Norwegian divers.
Haukadalsá, Dalabyggð, Iceland
visir.is

Anglers fear up to 46,000 fish dead after 'devastating' kill on Blackwater in Co Cork
A large fish kill on a 30 km stretch of the River Blackwater in north County Cork has reportedly killed thousands of fish; Inland Fisheries Ireland estimates 8,000–10,000 wild fish, while local angling groups put mortality as high as 46,000. Preliminary sampling indicates fungal infection on many fish, but no evidence to date links the kill to a licensed discharge.
River Blackwater (between Lombardstown and Killavullen), County Cork, Ireland
The Irish Times

For every wild salmon in the trap, there have been 30 pink salmon – Frightening
In Kvænangen river traps caught a 30:1 ratio of invasive pink salmon to wild Atlantic salmon, requiring up to three emptyings per day.
Kvænangen, Troms og Finnmark, Norway
Nordlys

Sea waters around UK experience record temperatures, causing dramatic changes in marine life
Sea surface temperatures around the UK have been the warmest start to the year on record, driving unusual species like bluefin tuna, octopus and mauve stinger jellyfish into British and Irish waters. Irish waters have cooled since a May marine heatwave but remain above average in the east and south.
United Kingdom and Ireland
The Irish Times

Rivers in Lapland where fishing is not recommended – salmonids poorly tolerate heat-warmed waters
Recent heat waves have warmed Lapland’s rivers and lakes, leading Metsähallitus to suspend fishing permits and advise against salmonid fishing in the warm waters.
Lapland, Finland
Lapin Kansa

Caspian Sea Water Levels Drop to Historic Low
Water levels in the Caspian Sea have fallen to more than 29 meters below the Baltic Sea reference point, a historic low, exposing large areas of seabed in the northern region and threatening its ecosystems.
Caspian Sea
The Moscow Times

Caught 2000 pink salmon in a single seine cast
Fisherman Edgar Olsen hauled in over 2,000 invasive pink salmon in one seine cast during trial fishing at the Vesterelva estuary in Nesseby, distributing about half to locals and sending the rest to Lerøy.
Nesseby, Troms og Finnmark, Norway
NRK Troms og Finnmark

Oil Spill Severely Impacts Fisheries in Nuussuaq
A damaged oil pipeline in Nuussuaq near Upernavik spilled around 8,000 liters of diesel into the sea, forcing halibut processing and fish production to pause for two days and severely disrupting local fisheries.
Nuussuaq, Avannaata, Greenland
Sermitsiaq

Invasive European Green Crab found north of Ketchikan
A small but potentially environmentally threatening crab is expanding its area of influence in Alaska.
Ketchikan, Alaska, United States

KBNERR warns of potential harmful algal bloom in Kachemak Bay
The Kachemak Bay National Estuarine Research Reserve detected Pseudo-nitzschia at bloom levels in Kachemak Bay starting July 4. This diatom can produce the toxin domoic acid, associated with amnesic shellfish poisoning, though toxin production is not yet confirmed. Observed bird deaths and marine mammal strandings have spurred collection of mussel samples for lab testing.
Homer, Kenai Peninsula Borough, Alaska, United States
Peninsula Clarion

Marine Heatwave in Norway – Extreme Sea Temperature
Sea surface temperatures off Norway have reached 22–23 °C, at least five degrees above normal, marking a marine heatwave that risks stressing marine life and intensifying extreme weather.
Trøndelag, Norway
NRK

Ninilchik River closed to sport fishing
The Alaska Department of Fish and Game has closed the Ninilchik River to all sport fishing from June 23 through July 15 to help meet king salmon escapement and broodstock collection goals.
Ninilchik, Kenai Peninsula, Alaska, United States
Homer News

Infectious Salmon Anemia Detected at Fish Farm in Troms
Infectious salmon anemia (ILA) has been confirmed at a SalMar aquaculture facility in Trettevik, Senja municipality in Troms, triggering a 10–20 km restriction zone to prevent disease spread.
Trettevik, Senja, Troms, Norway
NRK Troms og Finnmark

Whaling: Minke Whales in the Barents Sea Unusually Thin
This season’s minke whales caught in the Barents Sea are notably underweight, with experienced whalers and marine scientists observing unusually thin blubber layers and visible ribs.
Barents Sea, Norway
NRK

Sockeye yet to make an appearance on Russian, Kenai rivers
Fishing on the Kenai and Russian rivers opened June 11, but as of the previous evening only one sockeye salmon had been counted at the Russian River weir—compared to more than 700 at this time last year.
Kenai, Alaska, United States
Homer News

Ship Runs Aground in Siberia’s Yenisei River, Spilling 30 Tons of Diesel
A vessel towing two barges ran aground in the Yenisei River near Kazachinsky District, Krasnoyarsk Krai, on June 8, 2025, spilling around 30 metric tons of diesel fuel over a 50-km stretch of shoreline.
Kazachinsky District, Krasnoyarsk Krai, Russia
The Moscow Times

“Huge disaster”: Historically weak pink salmon runs strain Alaska’s seine fishermen
Skippers in Prince William Sound and Kodiak say this year's pink harvest is one of the worst they’ve ever seen. “I wake up every morning and I try to apply for a different job," one said.
Kodiak, Alaska, United States
Northern Journal

An Unknown Condition Found on Atlantic Salmon Parr
Atlantic salmon parr in Shinney's Brook, Labrador, exhibit an unusual condition with round, jelly-like substances and blood-like markings, yet appear healthy and behave normally. The conditions may be Atlantic salmon papillomatosis.
Shinney's Brook, NunatuKavut, Labrador
Sarah Yoder, David Oswald, Donna Carroll, Ted Meyers, Jayde Ferguson

Most of the red salmon were carrying worms
From the images shared, these appear to be *Philemona*, a freshwater parasite. *Philomena* is a food quality concern but is *Not* considered a human health concern. With proper preparation, the salmon is safe to eat.
Kenai, Alaska, United States
Cindy Lawrence, Lars Flora, Mike Brook, Sarah Yoder, Jayde Ferguson

Anchorage's popular Ship Creek to close to sport fishing for 2 weeks
Ship Creek in Anchorage will be closed to sport fishing for two weeks to support salmon stock sustainability at a local hatchery.
Anchorage, Alaska, United States
Alaska Public Media
Wesley Early, Alaska Public Media - Anchorage

Farmed Salmon Caught in Rivers Across Northwest Iceland
Escapted farmed salmon threatens wild salmon stocks across Northwest Iceland, where it has entered rivers.
Patreksfjörður, Westfjords, Iceland
Iceland Review

A temporary ban on salmon fishing was introduced in Chukotka
A temporary ban on all salmon fishing has been implemented in Chukotka, Russia due to declining salmon populations.
Anadyr, Chukotskiy Avtonomnyy Okrug, Russia
Prochukotku.ru

With thousands of sockeyes passing Bethel each day, dipnets are catching on
Amid severely restricted fishing on the Kuskokwim River, one bright spot has been abundant sockeye salmon runs at 30,000 fish daily near Bethel.
Bethel, Alaska, United States
Alaska Public Media

Caught 4000 pink salmon in one net throw: "That's an indescribable amount of fish"
Several thousand pink salmon were caught in one net in connection with the extraction of the blacklisted fish. Too many Pink Salmon in the oceans and rivers threaten other species of salmon in Norway.
Vestre Jakobselv, Norway
NRK

Skate caught in subsistence net
While subsistence salmon fishing, community members from Port Heiden found a skate in the net, which is unusual for them.
Port Heiden, Alaska, United States
Jaclyn Christensen, Jayde Ferguson, Shane Hertzog

Unidentified juvenile crab
Juvenille crab was found at a salmon set-net site. Is this a Puget Sound species that has now been found on the Alaska Peninsula?
Orzinski Bay
Tammy Davis, Karen Pletnikoff, Melissa Good, Asia Beder

Moon Jelly Fish Bloom in Howe Sound & Deep Cove
In 2022, an unprecedented bloom of moon jellyfish occurred numbering in the hundreds of thousands.
Vancouver, British Columbia, Canada
David Oswald, Tom Okey, Desirée Crickmay

Norton Sound crab fishery bounces back with record year following fishing hiatus
After no commercial crabbing since 2019, this summer’s Norton Sound Red King Crab fishery had a record year of $3.7 million dollars in ex-vessel value.
Nome, Alaska, United States
KNOM Radio Mission

Evidence of invasive crab that could wreak havoc on Alaska fisheries found near Metlakatla
The European Green Crab are a threat to ecosystems and commercial fisheries. They uproot eelgrass beds in search of food, which serve as habitat for herring and salmon.
Metlakatla, Alaska, United States
Alaska Public Media

Sea cucumber die-off near Vancouver Island
When Kathleen Reed descended for her usual weekly dive off the coast of Nanaimo, B.C., last Saturday she was shocked by how many dead sea cucumbers she saw. Experts and harvesters fear that sea cucumbers are being hit by an illness similar to sea star wasting disease.
Dolphin Beach, British Columbia, Canada
CBC

Seeing some Worms in Kenai Salmon
About 10% of our catch during dip net fishing at mouth of Kenai River was harboring these worms.
Kenai River, Alaska, United States
Jayde Ferguson, Mike Brubaker, Ian Williams

Decline in and delayed salmon on the Skeena River
In recent years, we have observed the salmon arriving at our territory along the Skeena River later than normal and in fewer numbers. The total number of wild sockeye (Oncorhynchus nerka) returning to the Skeena River have decreased by 69% in comparison to historical stocks.
Gwax Ts'eliksit, British Columbia, Canada
Kristen Davis, Tom Okey, David Oswald, Cody Thomas

Bristol Bay’s Nushagak District is seeing a record-setting sockeye salmon run
Tim Sands, an Alaska Department of Fish and Game area management biologist, said he is hopeful the strong run throughout Bristol Bay will continue next year.
Naknek, Alaska, United States
Anchorage Daily News

Double-crested Cormorant (Phalacrocorax auritus) Extended Range into the St. Lawrence Region
Double-crested cormorants have been observed in the St Lawrence River region, with record-breaking numbers, in recent years.
Gananoque, Ontario, Canada

Invasive seaweed detected on Aotea/Great Barrier Island
Caulerpa brachypus, which can spread rapidly and create dense mats, was found in July in Blind Bay and Tryphena Harbour. This was the first time the pest species had been detected in New Zealand.
Great Barrier Island
NZ Herald

Low Abundance of Fish Harms Norton Sound’s Commercial Fishing Season
The prospects are dim for this summer’s Norton Sound commercial fishing and crabbing seasons.
Nome, Alaska, United States
KNOM Radio Mission

Halibut fisherman weathers freak storm on trip back from Togiak
Westfall thanked his training with the Alaska Marine Safety Education Association to help him maximize his odds for survival.
KTOO

Kuskokwim River Chum Run Extremely Low So Far
The Kuskokwim River king salmon run does not look particularly strong this year, but chum numbers look even worse. Historically, around 60% of the salmon in the river at this point in the season would be chum or sockeye, but right now Bethel Test Fishery numbers show that just over 20% of the salmon are.
Bethel, Alaska, United States
KYUK

Low king counts to close Anchor River, Deep Creek to fishing
“The midpoint of the Anchor River king salmon run was extremely late. These fish are really having some odd, unprecedented run timing and behavior."
Kasilof, Alaska, United States

The cause of the mass mortality of fish in a large river in the Tyumen region has been determined
Local residents made a mound that led to the shallowing of the reservoir.
Тюмень, Tjumen, Russia
Radio Sputnik

Not a good salmon season in the Far East and fishery closes in an area of ​​Kamchatka
Петропавловск-Камчатский, Kamchatka Krai, Russia
FIS World News

Invasive grass carp caught in Chambly Basin
Scientists say the grass carp population in the Chambly Basin is probably small, but the presence of this species in any number is bad news.
Chambly, Quebec, Canada
Montreal Gazette

Some salmon return, but ‘not nearly enough’
Chum salmon have started returning the Douglas Island Pink and Chum Inc. Hatchery on Channel Drive, but it’s still not enough to establish a broodstock. As the hatchery struggles to ensure future stocks, fishermen are taking what fish they can just for cost recovery.
Juneau, Alaska, United States
Juneau Empire

Fisherman snags barracuda off Vancouver Island in rare encounter
Ferocious fish, not native to Canada, was netted and released in Alberni Inlet
Alberni Inlet, Vancouver Island, Canada
Port Alberni Valley News

Green Sturgeon (Acipenser medirostris) in Kachemak Bay
Until 2007, there have been only three verified reports of green sturgeon in the Gulf of Alaska and Bering Sea, and two anecdotal reports from the Copper River and Unalaska areas.
Halibut Cove, Alaska, United States

Seaweed invasion hurting fishermen's livelihoods
Seaweed native to the northwest Pacific is invading the rich marine waters of the Strait of Gibraltar and the brown algae is clogging up fishermen's nets and endangering their way of life.
Strait of Gibraltar
Al Jazeera

Dead Young Gray Whale (Eschrichtius robustus)
Young gray whale found dead on the beach.
Pilot Point, Alaska, United States
Maio Nishkian, Gay Sheffield, Barbara Mahoney

Northern anchovy blooms bring more sea life to Burrard Inlet
Northern anchovy are becoming more comment perhaps due to warmer temperatures. A 10-centimetre-long fish represents an anchovy that's about a year old suggesting that the fish are spawned locally in the pelagic zone, or upper, warmer zone of the seawater.
Port Moody, British Columbia, Canada
CBC

Manet invasion in the Oslo Fjord
Large menger glass jellyfish in the Oslo fjord cause problems for both beachgoers and shrimp fishermen. The whole trawl was full before it reached the bottom where the shrimp are.
Saltnes, Østfold, Norway

Wild salmon in Irish rivers displaying symptoms of red skin disease
Salmon affected have a characteristic red-spotted rash on their underbelly and may appear lethargic or moribund. In the past few weeks, suspected cases have also been reported in Denmark, Norway and Scotland.
River Leannan, Co. Donegol, Ireland
The Irish Times

Dead Pre-spawned Pink Salmon (Oncorhynchus gorbuscha)
During the summer of 2019, warm water temperatures lowered the amount of dissolved oxygen in rivers and caused salmon across the state, including Mountain Village, to die before they were able to spawn.
Mountain Village, Alaska, United States

TenTen Creek return of Salmon Species
North Saanich, British Columbia, Canada

Sea Lice Plagues Return and Threat to Wild Salmon Increases
Major sea lice epidemics have erupted on Atlantic salmon fish farms on Vancouver Island’s west coast over the last three months, according to industry, Fisheries and Oceans Canada and independent reports.
Clayquot Sound, British Columbia, Canada
The Tyee

Pink Salmon (Oncorhynchus gorbuscha) Die-off, Jakolof Creek
Drought and high temperatures have dried the creek and caused thousands of pink salmon and Dolly Varden to die before they could spawn. The event raises questions about vulnerability of area salmon streams to climate change, and for local residents food security.
Jakolof Creek, Alaska, United States
Michael Opheim , Stephen Payton, Ryan Brubaker

Infected salmon just another problem for Yukon subsistence fishermen
Yukon subsistence fishermen face challenges with gear restrictions, closures, and reports of salmon potentially infected with ichthyophonus, impacting their summer fishing activities.
Yukon River, Alaska, United States
KTOO

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