Atlantic Gray Seal vs Window Gnat

Halichoerus grypus compared with Sylvicola fenestralis

Key Differences

• Atlantic Gray Seal is Vulnerable while Window Gnat is Least Concern.

Taxonomic Classification

Rank	Atlantic Gray Seal	Window Gnat
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Arthropoda (Arthropods)
Class	Mammalia (Mammals)	Insecta (Insects)
Order	Pinnipedia (Seals & Sea Lions)	Diptera (Diptera)
Family	Phocidae (True Seals)	Anisopodidae
Genus	Halichoerus	Sylvicola
Species	Halichoerus grypus	Sylvicola fenestralis

Evolutionary Relationship

Atlantic Gray Seal and Window Gnat share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Atlantic Gray Seal

VU — Vulnerable

Window Gnat

LC — Least Concern

Physical Characteristics

Attribute	Atlantic Gray Seal	Window Gnat
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.

Window Gnat

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Denmark, Norway, Sweden, and 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.

Shared Countries

Both species can be found in 3 countries:

🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden