Atlantic Gray Seal vs Chatham shag

Halichoerus grypus compared with Leucocarbo onslowi

Key Differences

• Atlantic Gray Seal is Vulnerable while Chatham shag is Critically Endangered.

Taxonomic Classification

Rank	Atlantic Gray Seal	Chatham shag
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Pinnipedia (Seals & Sea Lions)	Suliformes (Suliformes)
Family	Phocidae (True Seals)	Phalacrocoracidae
Genus	Halichoerus	Leucocarbo
Species	Halichoerus grypus	Leucocarbo onslowi

Evolutionary Relationship

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

Conservation Status

Atlantic Gray Seal

VU — Vulnerable

Chatham shag

CR — Critically Endangered

Physical Characteristics

Attribute	Atlantic Gray Seal	Chatham shag
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.

Chatham shag

Habitat

Typically found in various aerial, terrestrial, and aquatic environments.

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.

Chatham shag

The Chatham shag (Leucocarbo onslowi) is a species in the genus Leucocarbo. It is currently classified as Critically Endangered on the IUCN Red List. Typically found in various aerial, terrestrial, and aquatic environments.