Black ghost shark vs Canadian beaver

Hydrolagus homonycteris compared with Castor canadensis

Key Differences

• Black ghost shark is Least Concern while Canadian beaver is Not Evaluated.

Taxonomic Classification

Rank	Black ghost shark	Canadian beaver
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Holocephali (Holocephali)	Mammalia (Mammals)
Order	Chimaeriformes (Chimaeriformes)	Rodentia (Rodents)
Family	Chimaeridae	Castoridae (Beavers)
Genus	Hydrolagus	Castor (Beavers)
Species	Hydrolagus homonycteris	Castor canadensis

Evolutionary Relationship

Black ghost shark and Canadian beaver share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Black ghost shark

LC — Least Concern

Canadian beaver

NE — Not Evaluated

Population: ~15.0M

Trend: Stable →

Physical Characteristics

Attribute	Black ghost shark	Canadian beaver
Diet	—	Herbivore
Average Lifespan	—	15 years
Average Length	—	1.0 m
Average Weight	—	25.0 kg

Habitat & Geographic Range

Black ghost shark

Canadian beaver

Habitat

Typically found in grasslands, forests, and vegetated habitats.

Range

Widely distributed across Europe (15 countries), North America (United States), and South America (Argentina, Chile).

Black ghost shark

The Black ghost shark (Hydrolagus homonycteris) is a species in the genus Hydrolagus. It is currently classified as Least Concern on the IUCN Red List.

Canadian beaver

The largest rodent in North America, Canadian beavers weigh up to 32 kg and are master ecosystem engineers inhabiting rivers, lakes, and wetlands across Canada and the northern United States. By felling trees and constructing dams up to hundreds of meters long, beavers create ponds that provide habitat for hundreds of species. Their lodges and canals transform entire watersheds. Once nearly hunted to extinction for their fur, beaver populations have recovered strongly.