Norway faces widespread yellow alerts for strong winds and icy roads after a sudden thaw, with the worst conditions in Lofoten, Vesterålen and Finnmark. Bus, ferry, fast boat and some flight services are disrupted; schools closed in parts of Nordland.

A salmon farm manager in Finnmark urges fishermen to report pearl necklace siphonophore (jellyfish) sightings after blooms caused skin and eye injuries and breathing problems in farmed salmon near Øksfjord/Hammerfest.

The invasive carpet sea squirt (filtsjöpung), known as “sea vomit,” is rapidly spreading across the seafloor in Kosterhavet National Park, smothering organisms beneath it. Authorities say budget cuts have hampered monitoring and control, but they are now examining ways to slow the outbreak.

Strong winds and freezing temperatures in the Yenisei Gulf of the Kara Sea created overlapping, scale-like sea-ice patterns known locally as 'dragon scales.' Photos were shared by the first mate of the nuclear icebreaker Ural.

About 4,000 liters of diesel leaked from the grounded landing craft M/S Sørøysund near Fjelldal in Tjeldsund. Emergency crews are pumping fuel off the vessel and have deployed absorbent booms; authorities do not currently fear major impacts to wildlife.

A 21-year-old humpback whale, identified as Polyphemus, was found dead near Lasqueti Island, the second confirmed humpback death in B.C.’s coastal waters in just over two weeks. Cause of death is unknown; DFO and MERS urge caution to mariners to reduce vessel-strike risks.