Eurasian beaver vs sea hedgehog hydroid

Castor fiber compared with Halecium muricatum

Key Differences

• Eurasian beaver is Vulnerable while sea hedgehog hydroid is Not Evaluated.

Taxonomic Classification

Rank	Eurasian beaver	sea hedgehog hydroid
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Cnidaria (Cnidarians)
Class	Mammalia (Mammals)	Hydrozoa (Hydrozoa)
Order	Rodentia (Rodents)	Leptothecata (Leptothecata)
Family	Castoridae (Beavers)	Haleciidae
Genus	Castor (Beavers)	Halecium
Species	Castor fiber	Halecium muricatum

Evolutionary Relationship

Eurasian beaver and sea hedgehog hydroid share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Eurasian beaver

VU — Vulnerable

sea hedgehog hydroid

NE — Not Evaluated

Physical Characteristics

Attribute	Eurasian beaver	sea hedgehog hydroid
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

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.

sea hedgehog hydroid

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Denmark, Norway, and Sweden.

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