Coelacanth vs Common Seal

Latimeria chalumnae compared with Phoca vitulina

Key Differences

• Coelacanth is Critically Endangered while Common Seal is Near Threatened.
• Coelacanth lives longer (100 years vs 30 years).

Taxonomic Classification

Rank	Coelacanth	Common Seal
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Coelacanthi (Coelacanthi)	Mammalia (Mammals)
Order	Coelacanthiformes (Coelacanthiformes)	Pinnipedia (Seals & Sea Lions)
Family	Latimeriidae	Phocidae (True Seals)
Genus	Latimeria	Phoca (Harbor Seals)
Species	Latimeria chalumnae	Phoca vitulina

Evolutionary Relationship

Coelacanth and Common Seal share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Coelacanth

CR — Critically Endangered

Population: ~500

Trend: Decreasing ↓

Common Seal

NT — Near Threatened

Population: ~500.0K

Trend: Stable →

Physical Characteristics

Attribute	Coelacanth	Common Seal
Diet	Carnivore	Carnivore
Average Lifespan	100 years	30 years
Average Length	1.8 m	1.7 m
Average Weight	80.0 kg	80.0 kg

Habitat & Geographic Range

Coelacanth

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and tropical and subtropical grasslands and savannas, among 8 distinct biome types spanning the Australasia and Afrotropic and Indomalayan realms. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Comoros, Indonesia, Mozambique, and South Africa. Currently classified as Critically Endangered 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.

Coelacanth

A living fossil thought extinct for 65 million years until rediscovered off South Africa in 1938, coelacanths can reach 2 meters and 90 kg. They belong to an ancient lobe-finned lineage more closely related to tetrapods than to ray-finned fish, making them scientifically invaluable for understanding vertebrate evolution. Found in deep rocky reef habitats of the Indian Ocean, they are nocturnal and undergo internal fertilization, giving birth to fully formed live young. Critically Endangered.

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.