Dark Stonewort vs Eurasian beaver

Nitella opaca compared with Castor fiber

Key Differences

• Dark Stonewort is Least Concern while Eurasian beaver is Vulnerable.

Taxonomic Classification

Rank	Dark Stonewort	Eurasian beaver
Kingdom	Plantae (Plants)	Animalia (Animals)
Phylum	Charophyta (Charophyta)	Chordata (Chordates)
Class	Charophyceae (Charophyceae)	Mammalia (Mammals)
Order	Charales (Charales)	Rodentia (Rodents)
Family	Characeae	Castoridae (Beavers)
Genus	Nitella	Castor (Beavers)
Species	Nitella opaca	Castor fiber

Conservation Status

Dark Stonewort

LC — Least Concern

Eurasian beaver

VU — Vulnerable

Physical Characteristics

Attribute	Dark Stonewort	Eurasian beaver
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Dark Stonewort

Habitat

Native to Europe and North America and South America, inhabiting ecosystems characteristic of the region.

Range

Distributed across Brazil, Denmark, Norway, Sweden, and United States.

Eurasian beaver

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found across Europe (6 countries). Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Eurasian beaver

Eurasian beaver (Castor fiber) is classified as Vulnerable (VU) on the IUCN Red List. Facing a high risk of endangerment in the wild, with declining populations and increasing habitat pressure.

Shared Countries

Both species can be found in 3 countries:

🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden