Circular Ear Shell vs Emperor Penguin

Haliotis cyclobates compared with Aptenodytes forsteri

Key Differences

• Circular Ear Shell is Least Concern while Emperor Penguin is Near Threatened.

Taxonomic Classification

Rank	Circular Ear Shell	Emperor Penguin
Kingdom same	Animalia (สัตว์)	Animalia (สัตว์)
Phylum	Mollusca (มอลลัสกา)	Chordata (สัตว์มีแกนสันหลัง)
Class	Gastropoda (ชั้นแกสโทรโพดา)	Aves (นก)
Order	Lepetellida (Lepetellida)	Sphenisciformes (Penguins)
Family	Haliotidae	Spheniscidae (Penguins)
Genus	Haliotis	Aptenodytes (Great Penguins)
Species	Haliotis cyclobates	Aptenodytes forsteri

Evolutionary Relationship

Circular Ear Shell and Emperor Penguin share a common ancestor at the Kingdom level: Animalia. (สัตว์)

Conservation Status

Circular Ear Shell

LC — Least Concern

Emperor Penguin

NT — Near Threatened

Population: ~595.0K

Trend: Stable →

Physical Characteristics

Attribute	Circular Ear Shell	Emperor Penguin
Diet	—	Carnivore
Average Lifespan	—	20 years
Average Length	—	1.1 m
Average Weight	—	40.0 kg

Habitat & Geographic Range

Circular Ear Shell

Habitat

Typically found in terrestrial and aquatic habitats including forests and freshwater.

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.

Circular Ear Shell

The Circular Ear Shell (Haliotis cyclobates) is a species in the genus Haliotis. It is currently classified as Least Concern on the IUCN Red List. Typically found in terrestrial and aquatic habitats including forests and freshwater.

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.