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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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Maritime Authority says Havila Biogass manure spill is among the largest they’ve seen
About 3.5 million liters of livestock-based biomanure leaked from Havila Biogass in Molde, spreading from a marsh into waterways and a small-boat harbor, causing fish and crab deaths. Norway’s Coastal Administration called it one of the largest such spills they’ve encountered and will order cleanup; the company is conducting remediation and investigating a failed pipe gasket as the likely cause.
Eidsvåg, Molde, Norway
NRK

State issues alert for toxic shellfish found in Kachemak Bay
Alaska health officials issued an alert after wild shellfish from Kachemak Bay’s inner bay tested above regulatory limits for paralytic shellfish poisoning toxins. Residents are warned not to harvest or eat untested wild shellfish; monitoring and test results are being posted by the Alaska Harmful Algal Bloom Network.
Homer, Alaska, United States
Homer News

Jellyfish Invasion Raises Dog Safety Concerns
The storm event on October 21st brought an invasion of jellyfish to flooded areas. Eating jellyfishis thought to have resulted in one dog fatality, raising concerns for pet owners across Kotzebue.
Kotzebue, Alaska, United States
Jacqualine Schaeffer, Laurie Meythaler-Mullins, Gay Sheffield, Tom Okey

New kind of plant on the beach
A new plant species is establishing itself in the area and impacting native beach greens.
Aleksandrovsk, Alaska, United States

Unusual cysts in grayling
"Grayling guts with unknown pearl like cyst or tapeworm. Never seen this before in our grayling."
Arctic Village, Alaska, United States
Noah Tsigonis, Crystal Frank Welker, Jayde Ferguson, Sarah Yoder

Sea Lice Outbreak Claims At Least 1 Million Salmon in Tálknafjörður
An unprecedented outbreak of sea lice in Tálknafjörður has led to the loss, or the need to dispose of, at least one million salmon. “Nobody has seen anything like this before. There is a Norwegian veterinarian who has been working in Iceland because of this and he has never seen anything like this in his 30-year career,” Karl Steinar observed.
Talknafjordur, Westfjords, Iceland
Iceland Review

Alaska cancels snow crab harvest again due to population concerns
The snow crab harvest in Alaska has been canceled for the second year in a row due to concerns about population sustainability, but red king crab and Tanner crab will be available for commercial fishermen this season. Last year was the first time in history the U.S. snow crab fishery was closed. The Alaska Department of Fish and Game said the harvests were closed over concerns about long-term conservation and the sustainability of crab stocks.
Kodiak, Alaska, United States

Invertebrates recover at Miller Creek
Just over a year ago, the Alaska Department of Fish and Game applied the pesticide rotenone to two lakes and a stream in the remote Miller Creek drainage on the northern Kenai Peninsula to eradicate the last known population of invasive northern pike on the Kenai Peninsula.
Soldotna, Alaska, United States
Peninsula Clarion

NOAA trawl survey: Cold pool returns in the Bering Sea
The Bering Sea’s cold pool, a critical part of the seafloor ecosystem, had shrunk to a worrying degree in recent years, but it is continuing to slowly return, according to the latest results of NOAA’s bottom trawl survey. Saffron cod, also called tomcod, seems to be bouncing back after a few bad years, and Arctic cod and blue king crab numbers were also better.
Bering Sea
The Nome Nugget

Saxitoxin detected in regional clam
By Diana Haecker
Savoonga, Alaska, United States
The Nome Nugget

Lots of dead krill washed up on Sarichef Island
Die-offs of krill are in some cases associated with hypoxia (low oxygen) excess sediment suspended in the water column and changes in water temperature. There were recent reports of high levels of Alexandrium in water samples in the areas, and Norton Sound Health Corporation is performing some testing of krill samples (see below). There was also an unprecedented storm event only a week ago, unusual for the storm surge and early season.
Shishmaref, Alaska, United States
Gay Sheffield, Brandon Ahmasuk, Dean Stockwell, Racheal Lee, Jacqualine Schaeffer, Anahma Shannon, Sadie McGill, Emma Pate

Storm bounty in clams
Storms can bring a bounty to the beach - driftwood sometimes or in this case, clams! But be careful out there. There are new concerns about emerging levels of harmful algae in Western Alaska waters, which could impact shellfish and human health.
Mertarvik, Alaska, United States
Louisa Castrodale, Chris Dankmeyer, Jacqualine Schaeffer, Gay Sheffield, Racheal Lee, Bob Gerlach, Brian Lefferts, Emma Pate, Joanna Barton, Julie Matweyou, Thomas Farrugia, Karen Pletnikoff

Harmful algae colours the Oslo fjord green
Scientists now say that the harmful alga will survive the winter and that it will probably turn green in the Oslo fjord next year as well.
Oslofjord, Oslo, Norway
NRK
Lea Girolami Bråthen, Dag Aasdalen, Maren Nan Myrseth

Jellyfish attack nuclear power plant
Scotland’s only working nuclear power plant at Torness shut down in an emergency procedure this week when jellyfish clogged the sea water-cooling intake pipes at the plant. To protect marine life and avert nuclear disasters, scientists are investigating the use of drones to provide estimates of jellyfish locations, amounts, and density.
Torness Power Station, Scotland
Bulletin of the Atomic Scientists

Gumboot Chiton Cryptochiton stelleri Die-off
We saw over 100 on a 1/2 mile stretch of beach. I am wondering if the chiton die-off is related to the stormy conditions or something else?
Coupeville, Washington, United States

Valuable crab populations are in a ‘very scary’ decline in warming Bering Sea
King and snow crab populations in the Bering Sea have plummeted ahead of the harvest season, some by 99% compared to previous years.
Bering Sea
The Seattle Times

An invasive parasite is taking over Alaska blue mud shrimp. Researchers want to kill it.
Orthione griffenis, or O. griffenis, eventually kills its host shrimp, and soon the remaining shrimp can’t find each other to reproduce, rendering a blue mud shrimp population extinct.
Sitka, Alaska, United States
Alaska Public Media

Large jellyfish threaten fisheries in the Sea of Japan
Swarms of giant jellyfish are floating along the coastline of the Sea of Japan, and the damage they may cause to fisheries is feared to be the worst in more than a decade.
Wakasa Bay, Japan
The Japan News

Decrease in Prawn Abundance of Desolation Sound
It is apparent that this area of coastline has experienced a sharp decline in its prawn populations. This may be due to increased fishing pressure from commercial prawn fishermen.
Powell River, British Columbia, Canada
David Oswald, Cody Thomas, Conlan Magel, Tom Okey

Marine vomit spread along the western coast of Norway
A self-cloning and invincible enemy invades coastal areas. The carpet sea squirt (Didemnum vexillum) or “marine vomit” have been observed nearby Stavanger and Bergen. Large yellow flakes has spread on the seabed and kills everything beneath. It may grow on boats and can spread along the coast.
Engøysundet, Stavanger, Rogaland, Norway
NRK
Josef Benoni Ness Tveit, Håkon Mannsåker

Feared sea urchin has come to Norway – Spreading like a plague
The species Japanese sea purse is found by divers in Stavanger harbour. "This is a plague we have been waiting for," says researcher Vivian Husa of the Institute of Marine Research. Now she particularly warns mussel breeders about the danger the species represents.
58.9812029, 5.7427645 Engøyholmen, Stavanger, Norway
Kyst og Fjord

Monitoring program tracks invasive (Didemnum vexillum) or “marine vomit”
On 2 November 2020, the Japanese invertebarate *Didemnum vexillum* was detected by diver and underwater photographer Erling Svensen at Engøyholmen in Stavanger harbor. The aim of a new monitoring project is to register occurrences of the presumed recently arrived D. vexillum in the delimited areas, and then to map how it spreads locally, and also what impact it has on the local fauna.
Stavanger, Rogaland, Norway
havnespy.stavangerdykk.no

Dead giant octopuses washed ashore south from Kamchtka peninsula on the Kuril Islands
A mass die off of fish and invertebrates has been reported in the Sea of Okhotsk, west of Kamchatka. Dozens of surfers reported symptoms including including poor eyesight, fever, diarrhea, nausea, vomiting, skin rashes and head and throat aches.
Severo-Kuril’sk, Sakhalin, Russia
Siberian Times

Eco disaster at Kamchatka peninsula with mass death of sea animals at precious Pacific beach
Khalaktyrsky Beach near Petropavlovsk is littered with hundreds of dead sea animals, from deep-sea Giant Pacific octopuses, to seals, sea urchins, stars, crabs and fish. Surfers were the first to raise alarm after problems with eyesight, fevers and throat aches.
Khalaktyrsky Beach
Siberian Times

No treasure found under the rainbow: The soil is full of plastic garbage
In the pictures, Måøya looks like a pristine natural gem on the coast of Trøndelag. But when scientists and adolescents started digging into the soil, they got shock.
Måøya, Frøya, Sør-Trøndelag, Norway
Solvår Flatås, Stein Lorentzen, Morten Andersen

Satellites track real-time damage of ocean blob menacing Hawaii
A blob menacing Hawaii is now visible from space. A massive heatwave in the Pacific Ocean is killing off coral. Satellites are capturing the destruction so that scientists can learn how to rebuild the reefs.
Hawai'i, United States
The Verge

Alberta’s bull trout listed as threatened and its ecosystem is in jeopardy
Bull trout, which are technically char, mostly inhabit cold and pristine snow-melt-fed waters. Changes in water quality and temperatures challenge the future for this species in Alberta.
Alberta
thestar.com

Large Northern Sea Nettle (Chrysaora melanaster) Die-off
A large group of dead northern sea nettles (*Chrysaora melanaster*) found near the shore in Kasitsna Bay.
McDonald Spit, Alaska, United States

Large Squid Caught in Chignik Bay
Unidentified squid caught by rod and reel off the beach.
Chignik, Alaska, United States

Poor Langoustine Season Could Mean Restaurant Shortage
In a good season, Skinney’s langoustine catch can reach 250-300 tons. This summer, it was only 38.
Höfn, East, Iceland
Iceland Review

Dangerously high levels of Red Tide found in bivalve shellfish on B.C. coast
The threshold for closure is set at 80 parts per million, but concentration in those areas were found to be as high as 1,300 parts per million.The warning applies to oysters, clams, scallops, mussels and geoduck.
Sechelt, British Columbia, Canada
Global News

Sea Nettle Jellyfish (Chrysaora melanaster) are Landing
Sea Nettle (*Chrysaora melanaster*) jellyfish washed up on the beach.

Unusual Squid Found on Shoreline
Squid are becoming more common on the shoreline over the past few years.
Aleksandrovsk, Alaska, United States

Officials warn of potentially lethal levels of biotoxin in Bellingham Bay mussels
The Whatcom County Health Department is warning residents that PSP a common biotoxin is now at potentially lethal levels in mussels harvested in Bellingham Bay.
Bellingham, Washington, United States
Longview Daily News

Investigating threats from invasive species in the Aleutians Islands
The results of the Plate Watch program only indicated one invasive species in the area, Caprella mutica, otherwise known as the Japanese skeleton shrimp.
Unalaska, Alaska, United States
Alaska Sea Grant

Warmer Arctic waters attract surprising visitors: clams, fish and whales
Ice in the north Bering Sea is diminishing, researchers aboard a Coast Guard ship report.
Washington Post

Angry Canadian crabs invade coast of Maine
While their main target appears to be the region's soft-shell clam population, they're also munching through acres of eelgrass, a native flowering plant that shelters and nourishes life under the sea.
Coastal Maine, United States
Mother Nature Network

Mass die-off of clams fouls Revere Beach
The Division of Marine Fisheries is analyzing the clams and expects to have preliminary results in the coming days that might point to a cause.
Revere, Massachusetts, United States
The Boston Globe

Shellfish Warning
Crescent City, California, United States

Gulf of Maine Water Temperatures Soar Near Record Highs After Ocean 'Heat Wave'
NOAA and NASA satellites measured an average sea-surface temperature of 68.93 degrees Fahrenheit in the Gulf of Maine on Aug. 8, only 0.05 degrees below the all-time record high of 68.98 set in 2012. It is the epicenter of the U.S. lobster fishing industry, an important feeding ground for rare North Atlantic right whales .
Gulf of Maine
The Weather Channel

Sea life beneath Antarctic ice shelf is changing, and warming may be why
In dives to the seafloor, scientists have noticed big differences in only a few years.
McMurdo Station, Antarctica
Washington Post

Coral Found Following November Storm
Red coral observed near Port Heiden along the Bering Sea coast.
Port Heiden, Alaska, United States

As Oceans Warm, the World’s Kelp Forests Begin to Disappear
Tasmania, Australia
Yale Environment 360

Shellfish off coast of Sweden produce vast amounts of methane, researchers say
On a more helpful note, fish farts also are giving researchers and managers clues about fish distributions.
Tampa, Florida, United States
Alaska Dispatch News

Dozens Of Octopuses Are Walking Up Onto Shore For No Apparent Reason
There was no evidence of physical harm to the eight-legged creatures, but there was still plenty of concern as to why they were all abandoning their regular ocean home.
Wales, United Kingdom
The Rainforest Site Blog

Octopus invasion on Welsh beach blamed on effects of recent storms
An incredibly rare octopus invasion may have been caused by recent storms. Storm Ophelia, quickly followed by Storm Brian caused huge waves and storm surges as gusts of up to 80 mph hit the Welsh coast.
New Quay, Wales, United Kingdom
The Telegraph

A 'monster' discovery: Tiny translucent crustacean a 1st in Canada's Arctic
What has eight hairy legs, one eye, no mouth and haunts the frigid waters below the frozen ocean? A speck of a creature you'd never know exists in Canada's Arctic, were it not for one researcher's accidental discovery off the shores of Cambridge Bay, Nunavut.
Iqaluit, Nunavut, Canada
CBC News

Stinger jellyfish swarms wipe out farmed salmon in west of Ireland
Killary Harbour, Ireland
The Irish Times

The biggest ever invasion of potentially fatal jellyfish-like creatures ever recorded in the UK thought to have been brought there by recent hurricanes
An invasion of potentially fatal jellyfish-like creatures on Britain's shores is the biggest ever recorded in the UK. The P...
United Kingdom

Slugs plague Dillingham gardeners
Dillingham gardeners say that an uptick in slimy pests in recent years is making growing greens more difficult.
Dillingham, Alaska, United States
KDLG Dillingham

Common Rock Crab Spreads Quickly Across Icelandic Shores
The Common Rock Crab has begun to grow rapidly in number around Icelandic shores. It was first seen in Hvalfjörður, West Iceland, in the year 2006. This summer, it has reached Eyjafjörður in North Iceland.
Hrisey, Iceland
Iceland Review

Record numbers of Portuguese man o' war wash up on Cornish coast
Record numbers of the potentially-fatal Portuguese man o' war have washed up on the Cornish coast, according to conservationists.
Perranporth, England, United Kingdom
BelfastTelegraph.co.uk

Day of reckoning for marine invaders
For centuries, marine species have moved around either by hitching ride on the hulls of ships or as stowaways in ballast water. In many instances, species have been deliberately introduced for aquaculture or other commercial purposes.
United Kingdom
Phys.org

Kachemak Bay has seen massive die-offs of sea stars and other species. What’s going on?
Kachemak Bay has witnessed massive die-offs of sea stars, murres and razor clams. Whats going on?
Seldovia Village, Alaska, United States
Alaska Dispatch News

Marine Mussels Clean of PSP Toxins
Klamath, California, United States

Dungeness crab (Metacarcinus magister) vulnerable to domoic acid contamination
Warning: (2016-11-07) Recreational anglers should avoid consuming the viscera (internal organs, also known as “butter” or “guts”) of dungeness crab
Klamath, California, United States

Black Slugs Invade Whittier
“They’ve been in Cordova for over 30 years. They’re just starting to be reported and sighted in other places. We have confirmed sightings in Whittier, in Girdwood, in Chenega Bay, in Eshamy Bay and one of the hatcheries out in the sound has reported them.”
Whittier, Alaska, United States
Glacier City Gazette

Seafood's new normal: An ecosystem at risk
Special report: A huge disruption to California's coastal ecosystem is under way after several years of unusually warm ocean conditions and drought.
Northern California Coastal Areas
The San Francisco Chronicle

Plumose anemones (Metridium spp.) detaching from rocks
Bowyer Island, Howe Sound, British Columbia, Canada

European Black Slug
Tenakee Springs, Alaska, United States

Are Ocean Conditions Right for Vibrio parahaemolyticus?
Resident becomes sick after consuming oysters and wonders what is being done to prevent future outbreaks of *V parahaemolyticus*, this new climate related illness in Alaska.
Anchorage, Alaska, United States
Mike Brubaker, Soumik Basu, Santina Gay, James Berner

Abundant Jellyfish Disrupt Commercial Salmon Fishery
Purse seiner crew scrambles to shovel the huge bycatch of Northern sea nettle jelly fish (*Chrysaora melanaster*) overboard.
Sand Point, Alaska, United States

Dead Sea Otter (Enhydra lutris) and Starfish (Phylum: Echinodermata)
Dead sea otter and star fish
Prince of Wales Islands, Alaska, United States

Blue Sail (Velella) Jellyfish
Blue Sail Jellyfish
Seldovia, Alaska, United States

Crayfish invade Kodiak waters
Alex Hughes is a Fish and Game technician who volunteers with KSWCD. He said based on their studies at the Buskin river, crayfish are successfully breeding. Crayfish are originally from the Pacific Northwest and as with many invasive species, it’s anyone’s guess how they got to Kodiak.
Kodiak, Alaska, United States
KTOO

Unusual Mussel (Mytilus californianus) Species
Unusual Mussel Species
Unalaska, Alaska, United States

Arribo de langostas en la playa de Puerto de Progreso, Yucatán
Chelem, Yucatán, Mexico

Lions Mane Jellyfish Sighting
11-20-14 Unusual jellyfish - Togiak, Alaska, USA
Togiak, Alaska, Unites States
Kristin Cieciel, Aeshia Upton, Brian Abraham

Jellyfish Bloom
11-14-14 Jellyfish bloom Haines, Alaska, USA
Haines, Alaska, United States

Mollusks in Moose (Alces alces) Gut
11-29-14 Mollusks in moose gut - Egegik, Alaska, USA
Egegik, Alaska, United States

Unusual species in Alaska waters indicate parts of Pacific warming dramatically
Hinchenbrook Entrance, Alaska
Alaska Dispatch News

Amber Snail
These ladies found a snail that they had never seen before and brought them.
Seldovia, Alaska, United States

Sea Otter (Enhydra lutris) Sighted at Possession Point, Southern Vancouver Islan
Sooke, British Columbia, Canada

Persistent High PSP Levels
Persistently high levels of PSP recorded in the Shumagin Islands.
Sand Point, Alaska, United States

High PSP levels in clams
11-7-13 High PSP levels in clams - King Cove, Alaska, USA
King Cove, Alaska, Unites States

Krill Die-off
11-1-13 Krill die-off - Metlakatla, Alaska, USA
Metlakatla, Alaska, United States

Mussel Roe Fouls Fishing Gear
Salmon and crab gear seeing an incredible increase in mussel roe and slime.
Unalakleet, Alaska, United States

Shell shock - thousands of Ninilchik clams wash up on beach in unusual die-off
A winter storm lashed the sandy beaches at the mouth of the Ninilchik River with ferocious waves, powerful enough to uproot thousands of razor clams.
Ninilchik, Alaska, United States
Redoubt Reporter

The Seattle Times: Sports: Notebook: Humboldt squid make rare appearance here
Washington's outer coast
Seattle Times

Jumbo squid is captured in unfamiliar waters
Sitka, Alaska
msnbc.com

Apparent native freshwater mussel mortality event

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