Common Seal vs Holt Notchwort

Phoca vitulina compared with Odontoschisma francisci

Key Differences

Common Seal is Near Threatened while Holt Notchwort is Least Concern.

Taxonomic Classification

Rank	Common Seal	Holt Notchwort
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Chordata (Chordates)	Marchantiophyta (liverwort)
Class	Mammalia (Mammals)	Jungermanniopsida (Jungermanniopsida)
Order	Pinnipedia (Seals & Sea Lions)	Jungermanniales (Jungermanniales)
Family	Phocidae (True Seals)	Cephaloziaceae
Genus	Phoca (Harbor Seals)	Odontoschisma
Species	Phoca vitulina	Odontoschisma francisci

Conservation Status

Common Seal

NT — Near Threatened

Population: ~500.0K

Trend: Stable →

Holt Notchwort

LC — Least Concern

Physical Characteristics

Attribute	Common Seal	Holt Notchwort
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.

Holt Notchwort

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Norway and Sweden.

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.