Hourglass Dolphin vs Red-Throated Diver

Lagenorhynchus cruciger compared with Gavia stellata

Key Differences

• Hourglass Dolphin is Least Concern while Red-Throated Diver is Near Threatened.

Taxonomic Classification

Rank	Hourglass Dolphin	Red-Throated Diver
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Cetacea (Whales & Dolphins)	Gaviiformes (Gaviiformes)
Family	Delphinidae (Oceanic Dolphins)	Gaviidae
Genus	Lagenorhynchus	Gavia
Species	Lagenorhynchus cruciger	Gavia stellata

Evolutionary Relationship

Hourglass Dolphin and Red-Throated Diver share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Hourglass Dolphin

LC — Least Concern

Red-Throated Diver

NT — Near Threatened

Physical Characteristics

Attribute	Hourglass Dolphin	Red-Throated Diver
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Hourglass Dolphin

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Red-Throated Diver

Habitat

Typically found in various aerial, terrestrial, and aquatic environments.

Range

Found across Europe (5 countries) and North America (United States). Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Red-Throated Diver

Red-Throated Diver (Gavia stellata) is classified as Near Threatened (NT) on the IUCN Red List. Close to qualifying as threatened, with populations that may become vulnerable without conservation action.