Birchbark Dot Lichen vs Common Seal

Leptorhaphis epidermidis compared with Phoca vitulina

Key Differences

Birchbark Dot Lichen is Least Concern while Common Seal is Near Threatened.

Taxonomic Classification

Rank	Birchbark Dot Lichen	Common Seal
Kingdom	Fungi (Fungi)	Animalia (Animals)
Phylum	Ascomycota (Sac Fungi)	Chordata (Chordates)
Class	Dothideomycetes (Dothideomycetes)	Mammalia (Mammals)
Order	Pleosporales (Pleosporales)	Pinnipedia (Seals & Sea Lions)
Family	Naetrocymbaceae	Phocidae (True Seals)
Genus	Leptorhaphis	Phoca (Harbor Seals)
Species	Leptorhaphis epidermidis	Phoca vitulina

Conservation Status

Birchbark Dot Lichen

LC — Least Concern

Common Seal

NT — Near Threatened

Population: ~500.0K

Trend: Stable →

Physical Characteristics

Attribute	Birchbark Dot Lichen	Common Seal
Diet	—	Carnivore
Average Lifespan	—	30 years
Average Length	—	1.7 m
Average Weight	—	80.0 kg

Habitat & Geographic Range

Birchbark Dot Lichen

Habitat

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

Range

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

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.

Birchbark Dot Lichen

The Birchbark Dot Lichen (Leptorhaphis epidermidis) is a species in the genus Leptorhaphis. It is currently classified as Least Concern on the IUCN Red List. Native to Europe and North America, inhabiting ecosystems characteristic of the region.

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.