Chatham Petrel vs Common Seal

Pterodroma axillaris compared with Phoca vitulina

Key Differences

• Chatham Petrel is Vulnerable while Common Seal is Near Threatened.

Taxonomic Classification

Rank	Chatham Petrel	Common Seal
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Aves (Birds)	Mammalia (Mammals)
Order	Procellariiformes (Procellariiformes)	Pinnipedia (Seals & Sea Lions)
Family	Procellariidae	Phocidae (True Seals)
Genus	Pterodroma	Phoca (Harbor Seals)
Species	Pterodroma axillaris	Phoca vitulina

Evolutionary Relationship

Chatham Petrel and Common Seal share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Chatham Petrel

VU — Vulnerable

Common Seal

NT — Near Threatened

Population: ~500.0K

Trend: Stable →

Physical Characteristics

Attribute	Chatham Petrel	Common Seal
Diet	—	Carnivore
Average Lifespan	—	30 years
Average Length	—	1.7 m
Average Weight	—	80.0 kg

Habitat & Geographic Range

Chatham Petrel

Habitat

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

Range

Found in Norway. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Common Seal

Habitat

Typically found in diverse ecosystems where prey species are available.

Range

Found across Europe (7 countries) and North America (United States). Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Chatham Petrel

The Chatham Petrel (Pterodroma axillaris) is a species in the genus Pterodroma. It is currently classified as Vulnerable on the IUCN Red List. Typically found in various aerial, terrestrial, and aquatic environments.

Common Seal

The most widely distributed pinniped, harbor seals inhabit temperate and subarctic coastal waters of both the North Atlantic and North Pacific. Adults reach up to 130 kg and spend roughly equal time at sea hunting fish, squid, and crustaceans and hauling out on beaches or rocks to rest. Their large, expressive eyes are adapted for underwater vision in low light. Harbor seals are a critical food source for orcas, sharks, and polar bears.

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway