Atlantic Gray Seal vs Centric diatom

Halichoerus grypus compared with Skeletonema subsalsum

Key Differences

• Atlantic Gray Seal is Vulnerable while Centric diatom is Not Evaluated.

Taxonomic Classification

Rank	Atlantic Gray Seal	Centric diatom
Kingdom	Animalia (Animals)	Chromista (Chromista)
Phylum	Chordata (Chordates)	Ochrophyta (Ochrophyta)
Class	Mammalia (Mammals)	Bacillariophyceae (Bacillariophyceae)
Order	Pinnipedia (Seals & Sea Lions)	Thalassiosirales (Thalassiosirales)
Family	Phocidae (True Seals)	Skeletonemaceae
Genus	Halichoerus	Skeletonema
Species	Halichoerus grypus	Skeletonema subsalsum

Conservation Status

Atlantic Gray Seal

VU — Vulnerable

Centric diatom

NE — Not Evaluated

Physical Characteristics

Attribute	Atlantic Gray Seal	Centric diatom
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.

Centric diatom

Habitat

Native to Europe and North America, inhabiting ecosystems characteristic of the region.

Range

Found across Europe (7 countries) and North America (United States).

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.

Centric diatom

The Centric Diatom (Skeletonema subsalsum) is a species in the genus Skeletonema. Found across Europe (7 countries) and North America (United States).

Shared Countries

Both species can be found in 3 countries:

🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden