Atlantic Spotted Dolphin vs Common Seal

Stenella frontalis compared with Phoca vitulina

Key Differences

• Atlantic Spotted Dolphin is Data Deficient while Common Seal is Near Threatened.

Taxonomic Classification

Rank	Atlantic Spotted Dolphin	Common Seal
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (Mammals)	Mammalia (Mammals)
Order	Cetacea (Whales & Dolphins)	Pinnipedia (Seals & Sea Lions)
Family	Delphinidae (Oceanic Dolphins)	Phocidae (True Seals)
Genus	Stenella	Phoca (Harbor Seals)
Species	Stenella frontalis	Phoca vitulina

Evolutionary Relationship

Atlantic Spotted Dolphin and Common Seal share a common ancestor at the Class level: Mammalia. (Mammals)

Conservation Status

Atlantic Spotted Dolphin

DD — Data Deficient

Common Seal

NT — Near Threatened

Population: ~500.0K

Trend: Stable →

Physical Characteristics

Attribute	Atlantic Spotted Dolphin	Common Seal
Diet	—	Carnivore
Average Lifespan	—	30 years
Average Length	—	1.7 m
Average Weight	—	80.0 kg

Habitat & Geographic Range

Atlantic Spotted Dolphin

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia, Norway, Portugal, and Venezuela.

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.

Atlantic Spotted Dolphin

The Atlantic Spotted Dolphin (Stenella frontalis) is a species in the genus Stenella. Its conservation status is listed as Data Deficient on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.

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.

Shared Countries

Both species can be found in 2 countries:

🇳🇴 Norway 🇵🇹 Portugal