common Atlantic octopus vs Emperor Penguin

Octopus vulgaris compared with Aptenodytes forsteri

Key Differences

• common Atlantic octopus is Not Evaluated while Emperor Penguin is Near Threatened.
• Emperor Penguin is 8.0x heavier than common Atlantic octopus.
• Emperor Penguin lives longer (20 years vs 2 years).

Taxonomic Classification

Rank	common Atlantic octopus	Emperor Penguin
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Chordata (Chordates)
Class	Cephalopoda (Cephalopods)	Aves (Birds)
Order	Octopoda (Octopuses)	Sphenisciformes (Penguins)
Family	Octopodidae (Common Octopuses)	Spheniscidae (Penguins)
Genus	Octopus (Octopuses)	Aptenodytes (Great Penguins)
Species	Octopus vulgaris	Aptenodytes forsteri

Evolutionary Relationship

common Atlantic octopus and Emperor Penguin share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

common Atlantic octopus

NE — Not Evaluated

Trend: Stable →

Emperor Penguin

NT — Near Threatened

Population: ~595.0K

Trend: Stable →

Physical Characteristics

Attribute	common Atlantic octopus	Emperor Penguin
Diet	Carnivore	Carnivore
Average Lifespan	2 years	20 years
Average Length	60 cm	1.1 m
Average Weight	5.0 kg	40.0 kg

Habitat & Geographic Range

common Atlantic octopus

Habitat

Typically found in diverse ecosystems where prey species are available.

Range

Distributed across Chile, Denmark, Norway, Portugal, and Sweden.

Emperor Penguin

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate coniferous forests, and boreal forests and taiga, among 4 distinct biome types within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Found in Norway. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

common Atlantic octopus

One of the most studied invertebrates in neuroscience and behavioral biology, common octopuses inhabit rocky reefs and seafloors in tropical and temperate coastal waters globally. Highly intelligent with distributed nervous systems — two-thirds of their 500 million neurons reside in their arms — they demonstrate tool use, problem-solving, and individual personalities. Masters of camouflage, they change skin color and texture in milliseconds. They have three hearts, blue copper-based blood, and extremely short lifespans of 1–2 years.

Emperor Penguin

The world's largest penguin, emperor penguins stand up to 1.2 meters and weigh 45 kg, inhabiting the Antarctic continent in some of the most extreme conditions on Earth. They breed in midwinter darkness at temperatures below -60°C, with males incubating single eggs on their feet under a brood pouch for 65 days while females are at sea. Their huddling behavior — cycling individuals through the warm center of thousands-strong groups — is a masterclass in cooperative survival.

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway