Hourglass Dolphin vs undulate ray

Lagenorhynchus cruciger compared with Raja undulata

Key Differences

• Hourglass Dolphin is Least Concern while undulate ray is Endangered.

Taxonomic Classification

Rank	Hourglass Dolphin	undulate ray
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Elasmobranchii
Order	Cetacea (Whales & Dolphins)	Rajiformes (Rajiformes)
Family	Delphinidae (Oceanic Dolphins)	Rajidae
Genus	Lagenorhynchus	Raja
Species	Lagenorhynchus cruciger	Raja undulata

Evolutionary Relationship

Hourglass Dolphin and undulate ray share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Hourglass Dolphin

LC — Least Concern

undulate ray

EN — Endangered

Physical Characteristics

Attribute	Hourglass Dolphin	undulate ray
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Hourglass Dolphin

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

undulate ray

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

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