A powerful magnitude 7.6 earthquake near Hokkaido prompted Japan to issue a tsunami warning, highlighting both strong ground shaking and immediate coastal hazards for Sapporo and nearby communities. Details in the post are limited, but the alert suggests authorities anticipated potentially dangerous waves following the mainshock.

The 81-foot tender F/V Pavlof sank Thursday morning while moored in Haines Harbor, prompting an oil-containment response and salvage efforts. Harbor staff, divers, and local vessels worked through low tide to free the vessel and limit contamination.

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.

Two separate fuel spills occurred at the Kangaatsiaq power plant within a week, releasing an estimated total of up to 27,000 liters into the building, surrounding ground, and the sea. Authorities say the extent of the marine spill is unknown and could not be contained due to wind, waves, darkness, and lack of equipment.

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.