Atlantic Gray Seal vs Hammerhead

Halichoerus grypus compared with Sphyrna corona

Key Differences

• Atlantic Gray Seal is Vulnerable while Hammerhead is Critically Endangered.

Taxonomic Classification

Rank	Atlantic Gray Seal	Hammerhead
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Chondrichthyes (Cartilaginous Fish)
Order	Pinnipedia (Seals & Sea Lions)	Carcharhiniformes (Ground Sharks)
Family	Phocidae (True Seals)	Sphyrnidae (Hammerhead Sharks)
Genus	Halichoerus	Sphyrna (Hammerhead Sharks)
Species	Halichoerus grypus	Sphyrna corona

Evolutionary Relationship

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

Conservation Status

Atlantic Gray Seal

VU — Vulnerable

Hammerhead

CR — Critically Endangered

Physical Characteristics

Attribute	Atlantic Gray Seal	Hammerhead
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.

Hammerhead

Habitat

Typically found in marine environments from coastal waters to deep ocean.

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.