Dwarf round ray vs Indian Ocean humpback dolphin

Urotrygon nana compared with Sousa plumbea

Key Differences

• Dwarf round ray is Near Threatened while Indian Ocean humpback dolphin is Endangered.

Taxonomic Classification

Rank	Dwarf round ray	Indian Ocean humpback dolphin
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Elasmobranchii	Mammalia (Mammals)
Order	Myliobatiformes (Myliobatiformes)	Cetacea (Whales & Dolphins)
Family	Urotrygonidae	Delphinidae (Oceanic Dolphins)
Genus	Urotrygon	Sousa
Species	Urotrygon nana	Sousa plumbea

Evolutionary Relationship

Dwarf round ray and Indian Ocean humpback dolphin share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Dwarf round ray

NT — Near Threatened

Indian Ocean humpback dolphin

EN — Endangered

Physical Characteristics

Attribute	Dwarf round ray	Indian Ocean humpback dolphin
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Dwarf round ray

Indian Ocean humpback dolphin

Habitat

Inhabits temperate broadleaf and mixed forests and Mediterranean forests and woodlands within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Found in Greece. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.