Emperor Penguin vs smooth giant clam

Aptenodytes forsteri compared with Tridacna derasa

Key Differences

• Emperor Penguin is Near Threatened while smooth giant clam is Vulnerable.

Taxonomic Classification

Rank	Emperor Penguin	smooth giant clam
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Mollusca (Mollusks)
Class	Aves (Birds)	Bivalvia (Bivalvia)
Order	Sphenisciformes (Penguins)	Cardiida (Cardiida)
Family	Spheniscidae (Penguins)	Cardiidae
Genus	Aptenodytes (Great Penguins)	Tridacna
Species	Aptenodytes forsteri	Tridacna derasa

Evolutionary Relationship

Emperor Penguin and smooth giant clam share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Emperor Penguin

NT — Near Threatened

Population: ~595.0K

Trend: Stable →

smooth giant clam

VU — Vulnerable

Physical Characteristics

Attribute	Emperor Penguin	smooth giant clam
Diet	Carnivore	—
Average Lifespan	20 years	—
Average Length	1.1 m	—
Average Weight	40.0 kg	—

Habitat & Geographic Range

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.

smooth giant clam

Habitat

Inhabits tropical and subtropical moist broadleaf forests within the Oceanian biogeographic realm.

Range

Distributed across Marshall Islands and Taiwan. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

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.