Common Seal vs Tiered Tooth

Phoca vitulina compared with Hericium cirrhatum

Key Differences

Common Seal is Near Threatened while Tiered Tooth is Vulnerable.

Taxonomic Classification

Rank	Common Seal	Tiered Tooth
Kingdom	Animalia (สัตว์)	Fungi (เห็ดรา)
Phylum	Chordata (สัตว์มีแกนสันหลัง)	Basidiomycota (Club Fungi)
Class	Mammalia (สัตว์เลี้ยงลูกด้วยน้ำนม)	Agaricomycetes (Mushrooms)
Order	Pinnipedia (Seals & Sea Lions)	Russulales (Russulales)
Family	Phocidae (True Seals)	Hericiaceae
Genus	Phoca (Harbor Seals)	Hericium
Species	Phoca vitulina	Hericium cirrhatum

Conservation Status

Common Seal

NT — Near Threatened

Population: ~500.0K

Trend: Stable →

Tiered Tooth

VU — Vulnerable

Physical Characteristics

Attribute	Common Seal	Tiered Tooth
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.

Tiered Tooth

Habitat

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

Range

Distributed across Belgium, Denmark, Norway, and Sweden. Currently classified as Vulnerable 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.