Common Seal vs Formosan koa

Phoca vitulina compared with Acacia confusa

Key Differences

Common Seal is Near Threatened while Formosan koa is Least Concern.

Taxonomic Classification

Rank	Common Seal	Formosan koa
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Chordata (Chordates)	Magnoliophyta (Flowering Plants)
Class	Mammalia (Mammals)	Magnoliopsida (Dicots)
Order	Pinnipedia (Seals & Sea Lions)	Fabales (Legumes & Allies)
Family	Phocidae (True Seals)	Fabaceae
Genus	Phoca (Harbor Seals)	Acacia
Species	Phoca vitulina	Acacia confusa

Conservation Status

Common Seal

NT — Near Threatened

Population: ~500.0K

Trend: Stable →

Formosan koa

LC — Least Concern

Physical Characteristics

Attribute	Common Seal	Formosan koa
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.

Formosan koa

Habitat

Inhabits tropical and subtropical moist broadleaf forests spanning the Indomalayan and Oceanian realms. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Africa (Mauritius, Seychelles), Asia (5 countries), North America (United States), and Oceania and the Pacific (Fiji, Micronesia, Palau).

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.