Atlantic Gray Seal vs Bartail spurdog

Halichoerus grypus compared with Squalus notocaudatus

Key Differences

• Atlantic Gray Seal is Vulnerable while Bartail spurdog is Least Concern.

Taxonomic Classification

Rank	Atlantic Gray Seal	Bartail spurdog
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Elasmobranchii
Order	Pinnipedia (Seals & Sea Lions)	Squaliformes (Squaliformes)
Family	Phocidae (True Seals)	Squalidae
Genus	Halichoerus	Squalus
Species	Halichoerus grypus	Squalus notocaudatus

Evolutionary Relationship

Atlantic Gray Seal and Bartail spurdog share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Atlantic Gray Seal

VU — Vulnerable

Bartail spurdog

LC — Least Concern

Physical Characteristics

Attribute	Atlantic Gray Seal	Bartail spurdog
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Atlantic Gray Seal

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Belgium, Denmark, Norway, Portugal, and Sweden. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Bartail spurdog

Atlantic Gray Seal

The Atlantic Gray Seal (Halichoerus grypus) is a species in the genus Halichoerus. It is currently classified as Vulnerable on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.

Bartail spurdog

The Bartail spurdog (Squalus notocaudatus) is a species in the genus Squalus. It is currently classified as Least Concern on the IUCN Red List.