Hourglass Dolphin vs smooth giant clam

Lagenorhynchus cruciger compared with Tridacna derasa

Key Differences

• Hourglass Dolphin is Least Concern while smooth giant clam is Vulnerable.

Taxonomic Classification

Rank	Hourglass Dolphin	smooth giant clam
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Mollusca (Mollusks)
Class	Mammalia (Mammals)	Bivalvia (Bivalvia)
Order	Cetacea (Whales & Dolphins)	Cardiida (Cardiida)
Family	Delphinidae (Oceanic Dolphins)	Cardiidae
Genus	Lagenorhynchus	Tridacna
Species	Lagenorhynchus cruciger	Tridacna derasa

Evolutionary Relationship

Hourglass Dolphin and smooth giant clam share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Hourglass Dolphin

LC — Least Concern

smooth giant clam

VU — Vulnerable

Physical Characteristics

Attribute	Hourglass Dolphin	smooth giant clam
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Hourglass Dolphin

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

smooth giant clam

Habitat

Inhabits tropical and subtropical moist broadleaf forests within the Oceanian biogeographic realm.

Range

Distributed across Marshall Islands and Taiwan. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.