A Chinese mitten crab was recently caught near Astoria, Oregon, marking the first confirmed sighting of this invasive species in the Pacific Northwest. Native to eastern Asia, the crab is known for its furry, mitten-like claws and ability to thrive in both freshwater and saltwater.

The mitten crab poses serious threats to ecosystems and infrastructure. It feeds aggressively on plants and animals, outcompetes native species, and burrows into riverbanks, causing erosion and damage.

Experts believe it may have arrived via ballast water or illegal release. Officials from Oregon, Washington, and NOAA are now investigating. Traps have been deployed, and sediment and water are being tested for further signs.

The crab was first discovered in the U.S. in San Francisco Bay in the 1980s, where it caused major ecological harm. With its ability to survive harsh conditions and climb obstacles, the species is difficult to control. Authorities urge the public to report sightings immediately.