Atlantic Gray Seal vs Fatspine spurdog

Halichoerus grypus compared with Squalus crassispinus

Key Differences

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

Taxonomic Classification

Rank	Atlantic Gray Seal	Fatspine 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 crassispinus

Evolutionary Relationship

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

Conservation Status

Atlantic Gray Seal

VU — Vulnerable

Fatspine spurdog

LC — Least Concern

Physical Characteristics

Attribute	Atlantic Gray Seal	Fatspine 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.

Fatspine 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.