Barnacle larvae are proliferating in the Baltic Sea, prompting the Swedish Boat Union to warn owners to wash hulls in time to prevent hard barnacle mats and reduce environmental and fuel impacts.

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.

An unusual sighting of squid in Chignik Lagoon, Alaska, highlights a pattern of increasing squid observations in unexpected locations..

A venomous lion’s mane jellyfish has been sighted on several west Swedish beaches between Strömstad and Malmö, delivering powerful stings that can cause breathing problems.

A small but potentially environmentally threatening crab is expanding its area of influence in Alaska.

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.

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.

Starfish wasting observed in Kassan for the first time in several years.

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.

While many Bering Sea crab populations find themselves in freefall, Dungeness crab is breaking records in regions that used to hardly see them.

High levels of PSP toxins have been found in razor clams in Chignik Lagoon and blue mussels in Sand Point, Alaska, making them unsafe to eat and potentially causing paralytic shellfish poisoning, with no known cure.

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?

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.

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.

"The event occurred on June 29th, on our native allotment near Kotzebue (Illivak). We left home in the morning and when we came back around 8:00 PM in the evening the whole lake had drained! It looked like it was blown up with dynamite."

Volunteers at the Whittier Slug-Out learned about Alaska’s invasive species and helped mitigate European black slugs near a popular cove on Prince William Sound.

I have photos of four different sea cucumbers decaying, but my friend claims to have observed around 10 dead sea cucumbers.

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.

"This year I walked along the same route after a rainstorm and see only one or two — sometimes none"

Extreme drought in the west means that households with private waterworks are out of water. Elvar's dried up. "The situation is very serious," he says.