Dwarf round ray vs Hector’s Beaked Whale

Urotrygon nana compared with Mesoplodon hectori

Key Differences

• Dwarf round ray is Near Threatened while Hector’s Beaked Whale is Data Deficient.

Taxonomic Classification

Rank	Dwarf round ray	Hector’s Beaked Whale
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Elasmobranchii	Mammalia (Mammals)
Order	Myliobatiformes (Myliobatiformes)	Cetacea (Whales & Dolphins)
Family	Urotrygonidae	Hyperoodontidae
Genus	Urotrygon	Mesoplodon
Species	Urotrygon nana	Mesoplodon hectori

Evolutionary Relationship

Dwarf round ray and Hector’s Beaked Whale share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Dwarf round ray

NT — Near Threatened

Hector’s Beaked Whale

DD — Data Deficient

Physical Characteristics

Attribute	Dwarf round ray	Hector’s Beaked Whale
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Dwarf round ray

Hector’s Beaked Whale

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.