Bog-Moss Flapwort vs Common Seal

Odontoschisma sphagni compared with Phoca vitulina

Key Differences

Bog-Moss Flapwort is Vulnerable while Common Seal is Near Threatened.

Taxonomic Classification

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

Conservation Status

Bog-Moss Flapwort

VU — Vulnerable

Common Seal

NT — Near Threatened

Population: ~500.0K

Trend: Stable →

Physical Characteristics

Attribute	Bog-Moss Flapwort	Common Seal
Diet	—	Carnivore
Average Lifespan	—	30 years
Average Length	—	1.7 m
Average Weight	—	80.0 kg

Habitat & Geographic Range

Bog-Moss Flapwort

Habitat

Native to Europe and North America, inhabiting ecosystems characteristic of the region.

Range

Distributed across Belgium, Denmark, Norway, Sweden, and United States. 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.

Bog-Moss Flapwort

The Bog-Moss Flapwort (Odontoschisma sphagni) is a species in the genus Odontoschisma. It is currently classified as Vulnerable on the IUCN Red List. Distributed across Belgium, Denmark, Norway, Sweden, and United States.

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.