Atlantic Gray Seal vs Common Shelduck

Halichoerus grypus compared with Tadorna tadorna

Key Differences

• Atlantic Gray Seal is Vulnerable while Common Shelduck is Least Concern.

Taxonomic Classification

Rank	Atlantic Gray Seal	Common Shelduck
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Pinnipedia (Seals & Sea Lions)	Anseriformes (Anseriformes)
Family	Phocidae (True Seals)	Anatidae
Genus	Halichoerus	Tadorna
Species	Halichoerus grypus	Tadorna tadorna

Evolutionary Relationship

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

Conservation Status

Atlantic Gray Seal

VU — Vulnerable

Common Shelduck

LC — Least Concern

Physical Characteristics

Attribute	Atlantic Gray Seal	Common Shelduck
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.

Common Shelduck

Habitat

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

Range

Distributed across Belgium, Denmark, Norway, Sweden, and Taiwan.

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.

Common Shelduck

Common Shelduck (Tadorna tadorna) is classified as Least Concern (LC) on the IUCN Red List. Widespread and abundant across its range, with stable populations and no immediate conservation concerns.

Shared Countries

Both species can be found in 4 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden