Emperor Penguin vs Rootless Duckweed

Aptenodytes forsteri compared with Wolffia arrhiza

Key Differences

Emperor Penguin is Near Threatened while Rootless Duckweed is Endangered.

Taxonomic Classification

Rank	Emperor Penguin	Rootless Duckweed
Kingdom	Animalia (động vật)	Plantae (thực vật)
Phylum	Chordata (động vật có dây sống)	Magnoliophyta (Flowering Plants)
Class	Aves (chim)	Liliopsida (Monocots)
Order	Sphenisciformes (Penguins)	Alismatales (Bộ Trạch tả)
Family	Spheniscidae (Penguins)	Araceae
Genus	Aptenodytes (Great Penguins)	Wolffia
Species	Aptenodytes forsteri	Wolffia arrhiza

Conservation Status

Emperor Penguin

NT — Near Threatened

Population: ~595.0K

Trend: Stable →

Rootless Duckweed

EN — Endangered

Physical Characteristics

Attribute	Emperor Penguin	Rootless Duckweed
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.

Rootless Duckweed

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, temperate broadleaf and mixed forests, and temperate coniferous forests, among 4 distinct biome types spanning the Indomalayan and Oceanian and Palearctic realms. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Asia (Japan), Europe (10 countries), North America (Canada), and South America (Brazil). Currently classified as Endangered 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.