Common Seal vs Rounded Earthstar

Phoca vitulina compared with Geastrum saccatum

Key Differences

Common Seal is Near Threatened while Rounded Earthstar is Endangered.

Taxonomic Classification

Rank	Common Seal	Rounded Earthstar
Kingdom	Animalia (Animals)	Fungi (Fungi)
Phylum	Chordata (Chordates)	Basidiomycota (Club Fungi)
Class	Mammalia (Mammals)	Agaricomycetes (Mushrooms)
Order	Pinnipedia (Seals & Sea Lions)	Geastrales (Geastrales)
Family	Phocidae (True Seals)	Geastraceae
Genus	Phoca (Harbor Seals)	Geastrum
Species	Phoca vitulina	Geastrum saccatum

Conservation Status

Common Seal

NT — Near Threatened

Population: ~500.0K

Trend: Stable →

Rounded Earthstar

EN — Endangered

Physical Characteristics

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

Habitat & Geographic 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.

Rounded Earthstar

Habitat

Typically found in forest floors, decomposing wood, and soil ecosystems.

Range

Widely distributed across Europe (4 countries), North America (United States), and South America (Brazil). Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

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.