Less than two months after the removal of dams restored a free-flowing Klamath River, salmon have made their way upstream to begin spawning and have been spotted in Oregon for the first time in more than a century.

Photos of the animal recently circulated widely online, prompting a flurry of debate about whether the animal was a wolf or just a dog.

A new plant species is establishing itself in the area and impacting native beach greens.

An observer reports unusual sightings of Sabine's gulls, including juveniles, outside their typical migration period, suggesting a potential new breeding colony near Nome.

RÚV received a video this week that shows a whale just off the beach at Reynisfjara; the second time in about a week. Guðjón Már Sigurðsson, marine biologist and cetacean expert at the Icelandic Marine Research Institute, says the whale swims shallow in a search for food.

Blue jays occur across southern Canada from Alberta east to Quebec and the Atlantic provinces.

A rare phenomenon of gnat larvae forming snake-like processions has been observed again in Interior Alaska, raising questions about their behavior and species classification.

An extremely rare Spade-toothed Beaked Whale Mesoplodon traversii washed ashore in Otago, providing the first chance to dissect and study such a specimen, with DNA analysis underway to confirm its species.

Norway reports a record high of 175 Lyme disease cases from January to June 2024, with uncertain causes attributed to weather conditions and increased tick awareness.

Hurricane Ivan in 2004 was the last strong hurricane to hit the southeastern Caribbean, causing catastrophic damage in Grenada as a Category 3 storm. Hurricane Beryl lashed the southeastern Caribbean as a Category 4 storm — an unprecedented strength this early in the Atlantic season. Beryl amassed its strength from record-warm waters that are hotter now than they would be at the peak of hurricane season in September, he said.

This crab from the Pacific Ocean was once introduced into the Barents waters of the Soviet Union in Arctic Russia. Since then the invasive species has spread to Norway’s Barents Sea and a multi-million dollar industry has sprung up around it. In 2023 Norway exported 2,500 tons of king crab worth 1,2 billion kroner (€100 million).

A polar bear was drawn to the Hope Dog Sled Race in Chukotka, Russia, an unusual event for the area. It is the third recent visit of a bear to the village. In size and build, the polar predator is similar to the same bear thatdisturbedlocal residents on the night of March 28.

A gray whale, presumed extinct in the Atlantic for over 200 years, was spotted by the New England Aquarium team south of Nantucket, suggesting climate change effects.

A healthy Cuvier's beaked whale, typically a deep-sea dweller, was found dead on Kodiak Island with no clear cause of death.

The Nigeria Center for Disease Control (NCDC) said no fewer than 2,122 suspected human cases, 411 confirmed cases, and 72 deaths have been recorded from Lassa fever in Nigeria this year.