Big-eared opossum vs sei whale

Didelphis aurita compared with Balaenoptera borealis

Key Differences

• Big-eared opossum is Least Concern while sei whale is Endangered.

Taxonomic Classification

Rank	Big-eared opossum	sei whale
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (Mammals)	Mammalia (Mammals)
Order	Didelphimorphia (Didelphimorphia)	Cetacea (Whales & Dolphins)
Family	Didelphidae	Balaenopteridae (Rorquals)
Genus	Didelphis	Balaenoptera (Rorquals)
Species	Didelphis aurita	Balaenoptera borealis

Evolutionary Relationship

Big-eared opossum and sei whale share a common ancestor at the Class level: Mammalia. (Mammals)

Conservation Status

Big-eared opossum

LC — Least Concern

sei whale

EN — Endangered

Physical Characteristics

Attribute	Big-eared opossum	sei whale
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Big-eared opossum

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

sei whale

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Widely distributed across Asia (Taiwan), Europe (4 countries), and South America (Colombia, Ecuador). Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Big-eared opossum

The Big-eared opossum (Didelphis aurita) is a species in the genus Didelphis. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.